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Document And Entity Information - USD ($) $ in Millions	12 Months Ended
Document And Entity Information - USD ($) $ in Millions	Dec. 31, 2011	Jan. 31, 2012	Jun. 30, 2011
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2011
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	FY
Entity Registrant Name	Gevo, Inc.
Entity Central Index Key	0001392380
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		26,460,750
Entity Well-known Seasoned Issuer	No
Entity Public Float			$ 119
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No

Consolidated Balance Sheets - USD ($)

Dec. 31, 2011

Dec. 31, 2010

ASSETS

Cash and cash equivalents

$ 94,225,000

$ 15,274,000

Accounts receivable

2,938,000

2,830,000

Inventories

3,814,000

3,765,000

Prepaid expenses and other current assets

1,283,000

1,040,000

Derivative asset

361,000

Margin deposit

474,000

624,000

Total current assets

102,734,000

23,894,000

PROPERTY, PLANT AND EQUIPMENT-Net

28,777,000

23,465,000

DEFERRED OFFERING COSTS

3,152,000

DEBT ISSUE COSTS

1,017,000

929,000

DEPOSITS AND OTHER ASSETS

502,000

169,000

TOTAL

133,030,000

51,609,000

LIABILITIES AND STOCKHOLDERS' EQUITY

Accounts payable and accrued expenses

12,440,000

7,903,000

Current portion of secured long-term debt-Net of $969,000 and $113,000 discount at December 31, 2011 and 2010, respectively

3,491,000

1,785,000

Derivative liability

186,000

405,000

Fair value of warrant liabilities

2,034,000

Total current liabilities(*)

^[1]

16,117,000

12,127,000

SECURED LONG-TERM DEBT-Net of $1,504,000 and $1,493,000 discount, less current portion, at December 31, 2011 and 2010, respectively

24,752,000

18,647,000

OTHER LIABILITIES

24,000

876,000

Total liabilities

40,893,000

31,650,000

COMMITMENTS AND CONTINGENCIES

STOCKHOLDERS' EQUITY:

Preferred stock

Common stock, $0.01 par value per share; 100,000,000 and 30,000,000 shares authorized at December 31, 2011 and 2010, respectively; 26,382,058 and 1,160,657 shares issued and outstanding at December 31, 2011 and 2010, respectively

264,000

12,000

Additional paid-in capital

226,508,000

105,128,000

Deficit accumulated during development stage

(134,635,000)

(85,327,000)

Total stockholders' equity

92,137,000

19,959,000

TOTAL

$ 133,030,000

51,609,000

Convertible Preferred Stock [Member]

STOCKHOLDERS' EQUITY:

Preferred stock

$ 146,000

[1]	Liabilities of Gevo, Inc.'s consolidated subsidiaries for which creditors do not have recourse to the general credit of Gevo, Inc. were $4,462,000 and $4,785,000 at December 31, 2011 and 2010, respectively, and are recorded within current liabilities.

Consolidated Balance Sheets (Parenthetical) - USD ($)	Dec. 31, 2011	Dec. 31, 2010
Current portion of secured long-term debt, discount	$ 969,000	$ 113,000
SECURED LONG-TERM DEBT (less current portion), discount	$ 1,504,000	$ 1,493,000
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	0
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	30,000,000
Common stock, shares issued	26,382,058	1,160,657
Common stock, shares outstanding	26,382,058	1,160,657
Non-recourse subsidiary debt	$ 4,462,000	$ 4,785,000
Convertible Preferred Stock [Member]
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	0	15,246,000
Preferred stock, shares issued	0	14,613,602
Preferred stock, shares outstanding	0	14,613,602
Aggregate liquidation preference	$ 0	$ 90,660,000

Consolidated Statements Of Operations - USD ($)	12 Months Ended			79 Months Ended
Consolidated Statements Of Operations - USD ($)	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2011
REVENUES:
Ethanol sales and related products, net	$ 63,742,000	$ 14,765,000		$ 78,507,000
Licensing revenue		138,000		138,000
Grant and research and development program revenue	807,000	1,493,000	$ 660,000	3,543,000
Total revenues	64,549,000	16,396,000	660,000	82,188,000
COST OF GOODS SOLD	(60,588,000)	(13,446,000)		(74,034,000)
GROSS MARGIN	3,961,000	2,950,000	660,000	8,154,000
OPERATING EXPENSES:
Research and development	(19,753,000)	(14,820,000)	(10,508,000)	(57,219,000)
Selling, general and administrative	(28,890,000)	(23,643,000)	(8,699,000)	(70,325,000)
Lease termination costs				(894,000)
Loss on abandonment or disposal of assets	(11,000)		(22,000)	(354,000)
Total operating expenses	(48,654,000)	(38,463,000)	(19,229,000)	(128,792,000)
LOSS FROM OPERATIONS	(44,693,000)	(35,513,000)	(18,569,000)	(120,638,000)
OTHER (EXPENSE) INCOME:
Interest and other expense	(3,577,000)	(2,374,000)	(1,103,000)	(8,579,000)
Interest and other income	85,000	108,000	277,000	721,000
Loss from change in fair value of warrant liabilities	(29,000)	(2,333,000)	(490,000)	(2,852,000)
Other expense-net	(3,521,000)	(4,599,000)	(1,316,000)	(10,710,000)
NET LOSS	(48,214,000)	(40,112,000)	(19,885,000)	(131,348,000)
Deemed dividend-amortization of beneficial conversion feature on Series D-1 preferred stock	(1,094,000)	(2,778,000)		(3,872,000)
NET LOSS ATTRIBUTABLE TO GEVO, INC. COMMON STOCKHOLDERS	$ (49,308,000)	$ (42,890,000)	$ (19,885,000)	$ (135,220,000)
Net loss per share attributable to Gevo, Inc. common stockholders-basic and diluted	$ (2.15)	$ (37.44)	$ (18.07)
Weighted-average number of common shares outstanding-basic and diluted	22,909,916	1,145,500	1,100,294

Consolidated Statements Of Stockholders' Equity - USD ($)	Series D-1 Preferred Stock [Member] Convertible Preferred Stock [Member]	Series D-1 Preferred Stock [Member] Additional Paid-In Capital [Member]	Series D-1 Preferred Stock [Member]	Series A-2 Preferred Stock [Member] Convertible Preferred Stock [Member]	Series A-2 Preferred Stock [Member] Additional Paid-In Capital [Member]	Series A-2 Preferred Stock [Member]	Series A-3 Preferred Stock [Member] Convertible Preferred Stock [Member]	Series A-3 Preferred Stock [Member] Additional Paid-In Capital [Member]	Series A-3 Preferred Stock [Member]	Series A-4 Preferred Stock [Member] Convertible Preferred Stock [Member]	Series A-4 Preferred Stock [Member] Additional Paid-In Capital [Member]	Series A-4 Preferred Stock [Member]	Series B Preferred Stock [Member] Convertible Preferred Stock [Member]	Series B Preferred Stock [Member] Additional Paid-In Capital [Member]	Series B Preferred Stock [Member]	Series C Preferred Stock [Member] Convertible Preferred Stock [Member]	Series C Preferred Stock [Member] Additional Paid-In Capital [Member]	Series C Preferred Stock [Member]	Series D Preferred Stock [Member] Convertible Preferred Stock [Member]	Series D Preferred Stock [Member] Additional Paid-In Capital [Member]	Series D Preferred Stock [Member]	Common Stock [Member]	Convertible Preferred Stock [Member]	Additional Paid-In Capital [Member]	Deficit Accumulated During the Development Stage [Member]	Total
BALANCE at Dec. 31, 2005																						$ 10,000	$ 10,000	$ 424,000	$ (259,000)	$ 185,000
BALANCE, shares at Dec. 31, 2005																						950,000	1,000,000
Issuance of preferred stock				$ 11,000	$ 892,000	$ 903,000	$ 9,000	$ 1,592,000	$ 1,601,000
Issuance of preferred stock, shares				1,084,000			915,000
Issuance of warrants with secured long-term debt																								10,000		10,000
Stock issuance costs																								(20,000)		(20,000)
Non-cash stock-based compensation																								2,000		2,000
Net loss for the year ended																									(1,110,000)	(1,110,000)
BALANCE at Dec. 31, 2006																						$ 10,000	$ 30,000	2,900,000	(1,369,000)	1,571,000
BALANCE, shares at Dec. 31, 2006																						950,000	2,999,000
Issuance of common stock																								10,000		10,000
Issuance of common stock, shares																						22,000
Issuance of preferred stock										$ 9,000	$ 1,991,000	$ 2,000,000	$ 10,000	$ 2,990,000	$ 3,000,000
Issuance of preferred stock, shares										858,369			1,027,397
Issuance of restricted common stock																						$ 2,000		(2,000)
Issuance of restricted common stock, shares																						187,500
Issuance of warrants with secured long-term debt																								33,000		33,000
Stock issuance costs																								(82,000)		(82,000)
Non-cash stock-based compensation																								55,000		55,000
Net loss for the year ended																									(7,226,000)	(7,226,000)
BALANCE at Dec. 31, 2007																						$ 12,000	$ 49,000	7,895,000	(8,595,000)	(639,000)
BALANCE, shares at Dec. 31, 2007																						1,159,500	4,884,766
Issuance of Series C preferred stock converted from promissory notes and accrued interest																							$ 6,000	3,037,000		3,043,000
Issuance of Series C preferred stock converted from promissory notes and accrued interest, shares																							555,346
Issuance of preferred stock																$ 25,000	$ 13,932,000	$ 13,957,000
Issuance of preferred stock, shares																2,546,844
Issuance of restricted common stock																						$ 1,000		(1,000)
Issuance of restricted common stock, shares																						50,000
Issuance of warrants with secured long-term debt																								326,000		326,000
Issuance of warrants with convertible promissory notes																								505,000		505,000
Beneficial conversion feature-convertible promissory notes																								505,000		505,000
Stock issuance costs																								(210,000)		(210,000)
Non-cash stock-based compensation																								207,000		207,000
Forfeiture of restricted common stock																						$ (1,000)		1,000
Forfeiture of restricted common stock, shares																						(64,583)
Exercise of stock options to common stock																								6,000		6,000
Exercise of stock options to common stock, shares																						19,155
Net loss for the year ended																									(14,542,000)	(14,542,000)
BALANCE at Dec. 31, 2008																						$ 12,000	$ 80,000	26,203,000	(23,137,000)	3,158,000
BALANCE, shares at Dec. 31, 2008																						1,164,072	7,986,956
Cumulative effect of reclassification of preferred stock warrants from equity to liabilities																								(874,000)	585,000	(289,000)
Issuance of preferred stock																			$ 46,000	$ 32,454,000	$ 32,500,000
Issuance of preferred stock, shares																			4,616,483
Stock issuance costs																								(1,346,000)		(1,346,000)
Non-cash stock-based compensation																								945,000		945,000
Forfeiture of restricted common stock, shares																						(13,530)
Exercise of stock options to common stock, shares																						834
Net loss for the year ended																									(19,885,000)	(19,885,000)
BALANCE at Dec. 31, 2009																						$ 12,000	$ 126,000	57,382,000	(42,437,000)	15,083,000
BALANCE, shares at Dec. 31, 2009																						1,151,376	12,603,439
Beneficial conversion feature-Series D-1																								5,744,000		5,744,000
Deemed dividend-amortization of beneficial conversion feature on Series D-1 convertible preferred stock																								2,778,000	(2,778,000)
Issuance of preferred stock	$ 19,000	$ 26,801,000	$ 26,820,000
Issuance of preferred stock, shares	1,902,087
Stock issuance costs																								(153,000)		(153,000)
Non-cash stock-based compensation																								10,511,000		10,511,000
Forfeiture of restricted common stock, shares																						(22,266)
Exercise of stock options to common stock																								16,000		16,000
Exercise of stock options to common stock, shares																						31,547
Issuance of Series C preferred stock upon exercise of warrant																							$ 1,000	2,049,000		2,050,000
Issuance of Series C preferred stock upon exercise of warrant, shares																							108,076
Net loss for the year ended																									(40,112,000)	(40,112,000)
BALANCE at Dec. 31, 2010																						$ 12,000	$ 146,000	105,128,000	(85,327,000)	19,959,000
BALANCE, shares at Dec. 31, 2010																						1,160,657	14,613,602
Issuance of common stock in initial public offering, net of underwriting discounts and commissions																						$ 82,000		110,326,000		110,408,000
Issuance of common stock in initial public offering, net of underwriting discounts and commissions, shares																						8,222,500
Conversion of preferred stock to common stock upon initial public offering																						$ 163,000	$ (146,000)	(17,000)
Conversion of preferred stock to common stock upon initial public offering, shares																						16,329,703	(14,613,602)
Conversion of preferred stock warrants to common stock warrants upon initial public offering and reclassification of related liability to additional paid-in capital																								2,063,000		2,063,000
Deemed dividend-amortization of beneficial conversion feature on Series D-1 convertible preferred stock																								1,094,000	(1,094,000)
Issuance of restricted common stock																						$ 3,000		(3,000)
Issuance of restricted common stock, shares																						311,859
Issuance of warrants with secured long-term debt																								877,000		877,000
Non-cash stock-based compensation																								6,826,000		6,826,000
Issuance of common stock pursuant to employee stock purchase plan																								47,000		47,000
Issuance of common stock pursuant to employee stock purchase plan, shares																						8,764
Exercise of stock options to common stock																						$ 2,000		169,000		171,000
Exercise of stock options to common stock, shares																						266,151
Issuance of common stock upon cashless net exercise of warrant, shares																						122,424
Issuance of common stock upon cashless net exercise of warrant																						$ 2,000		(2,000)
Net loss for the year ended																									(48,214,000)	(48,214,000)
BALANCE at Dec. 31, 2011																						$ 264,000		$ 226,508,000	$ (134,635,000)	$ 92,137,000
BALANCE, shares at Dec. 31, 2011																						26,382,058

Consolidated Statements Of Cash Flows - USD ($)	12 Months Ended			79 Months Ended
Consolidated Statements Of Cash Flows - USD ($)	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (48,214,000)	$ (40,112,000)	$ (19,885,000)	$ (131,348,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	4,600,000	3,188,000	1,511,000	10,292,000
Non-cash Stock-based compensation	6,826,000	10,511,000	945,000	18,546,000
Stock expense for shares issued pursuant to license agreements				10,000
Non-cash interest expense and amortization of debt discounts and debt issue costs to non-cash interest expense	928,000	762,000	235,000	3,081,000
Loss from change in fair value of warrant liabilities	29,000	2,333,000	490,000	2,852,000
Loss (gain) from change in derivative	142,000	(561,000)		(419,000)
Loss on abandonment or disposal of fixed assets	11,000		22,000	354,000
Changes in operating assets and liabilities (net of effects of acquisition):
Accounts receivable	(108,000)	(732,000)	(99,000)	(939,000)
Prepaid expenses and other current assets	(531,000)	47,000	(128,000)	(648,000)
Inventories	(49,000)	(195,000)		(244,000)
Margin deposit	150,000	268,000		418,000
Deposits and other assets		1,000	4,000	(90,000)
Accounts payable, accrued expenses, and long-term liabilities	2,605,000	3,594,000	806,000	8,767,000
Net cash used in operating activities	(33,611,000)	(20,896,000)	(16,099,000)	(89,368,000)
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisitions of property, plant and equipment	(8,015,000)	(806,000)	(2,982,000)	(16,255,000)
Acquisition of Agri-Energy, net of cash acquired		(24,936,000)		(24,936,000)
Other	(58,000)			(58,000)
Proceeds from the sale of property and equipment				5,000
Restricted certificate of deposit	40,000	40,000	40,000	(79,000)
Net cash used in investing activities	(8,033,000)	(25,702,000)	(2,942,000)	(41,323,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of common stock (excluding initial public offering and employee stock purchase plan)	171,000	16,000		193,000
Proceeds from issuance of common stock pursuant to employee stock purchase plan	47,000			47,000
Proceeds from issuance of convertible preferred stock		31,564,000	32,500,000	86,025,000
Proceeds from issuance of convertible promissory notes with warrant				3,000,000
Proceeds from issuance of secured long-term debt	10,000,000	17,500,000	114,000	36,578,000
Proceeds from issuance of warrants				1,000
Proceeds from exercise of warrants		592,000		592,000
Payments on secured long-term debt	(1,897,000)	(5,250,000)	(622,000)	(8,290,000)
Deposit on secured long-term debt	(307,000)			(307,000)
Proceeds from issuance of common stock in initial public offering, net of underwriting discounts and commissions	114,704,000			114,704,000
Deferred offering costs	(1,692,000)	(2,604,000)		(4,296,000)
Debt issue costs	(431,000)	(1,033,000)		(1,464,000)
Payment of stock issuance costs		(153,000)	(1,346,000)	(1,867,000)
Net cash provided by financing activities	120,595,000	40,632,000	30,646,000	224,916,000
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	78,951,000	(5,966,000)	11,605,000	94,225,000
Beginning of period	15,274,000	21,240,000	9,635,000
Ending of period	94,225,000	15,274,000	21,240,000	94,225,000
SUPPLEMENTAL DISCLOSURES OF NON-CASH TRANSACTIONS-Investing and financing:
Conversion of preferred stock warrants to common stock warrants upon initial public offering and reclassification of related liability to additional paid-in capital	2,063,000			2,063,000
Promissory notes and accrued interest converted to Series C preferred stock				3,043,000
Issuance of common stock pursuant to license agreements				10,000
Issuance of Series C preferred stock upon exercise of warrant (amount reclassified from liability to equity)		1,458,000		1,458,000
Issuance of Series D-1 preferred stock to ICM, Inc. in exchange for a credit against future services		1,000,000		1,000,000
Deemed dividend-amortization of beneficial conversion feature on Series D-1 preferred stock	1,094,000	2,778,000		3,872,000
Reclassified deferred offering costs to additional paid-in capital upon initial public offering	4,296,000			4,296,000
Capital asset additions in accounts payable and accrued expenses	1,846,000	174,000	52,000	1,846,000
Capital asset additions acquired using prepaid credit with ICM, Inc.	288,000	438,000		726,000
Accrued deferred offering costs		548,000
SUPPLEMENTAL CASH FLOW DISCLOSURE-Cash paid for interest, net of amounts capitalized	2,461,000	1,453,000	868,000	5,151,000
Issued With Secured Long-Term Debt [Member]
SUPPLEMENTAL DISCLOSURES OF NON-CASH TRANSACTIONS-Investing and financing:
Warrants issued	$ 877,000	$ 177,000	$ 203,000	1,626,000
Issued With Convertible Promissory Notes [Member]
SUPPLEMENTAL DISCLOSURES OF NON-CASH TRANSACTIONS-Investing and financing:
Warrants issued				$ 505,000

Nature Of Business And Significant Accounting Policies

12 Months Ended

Dec. 31, 2011

Nature Of Business And Significant Accounting Policies [Abstract]

Nature Of Business And Significant Accounting Policies

1. Nature of Business and Significant Accounting Policies

Nature of Business—Gevo, Inc. (together with its subsidiaries, the "Company") is a renewable chemicals and next generation biofuels company focused on the development and commercialization of alternatives to petroleum-based products based on isobutanol produced from renewable feedstocks. Gevo, Inc. was incorporated in Delaware on June 9, 2005 ("Inception"). Gevo, Inc. formed Gevo Development, LLC ("Gevo Development") on September 18, 2009 to finance and develop biorefineries through joint venture or direct acquisition (Note 6). Gevo Development became a wholly owned subsidiary of the Company on September 22, 2010. Gevo Development purchased all of the membership interests of Agri-Energy, LLC and certain assets of Agri-Energy Limited Partnership (collectively referred to as "Agri-Energy") on September 22, 2010 (Note 2). Agri-Energy, a wholly owned subsidiary of Gevo Development, is currently engaged in the business of producing and selling ethanol and related products produced at its ethanol plant located in Luverne, Minnesota (the "Agri-Energy Facility"). The retrofit of the Agri-Energy Facility to the production of isobutanol is currently underway and is expected to be completed in the first half of 2012.

On February 14, 2011, the Company completed its initial public offering issuing 8,222,500 shares of common stock at an offering price of $15.00 per share, resulting in net proceeds of $110,408,000, after deducting underwriting discounts and commissions of $8,634,000 and other offering costs of $4,296,000. Upon the closing of the initial public offering, the Company's outstanding shares of convertible preferred stock were automatically converted into 16,329,703 shares of common stock and the outstanding convertible preferred stock warrants were automatically converted into common stock warrants to purchase a total of 398,032 shares of common stock.

At December 31, 2011, the Company is considered to be in the development stage as its primary activities, since incorporation, have been conducting research and development, business development, business and financial planning, establishing its facilities, recruiting personnel and raising capital. Successful completion of the Company's research and development programs, and ultimately, the attainment of profitable operations are dependent upon future events, including completion of its development activities resulting in sales of isobutanol or isobutanol-derived products and/or technology, obtaining adequate financing to complete its development activities, obtaining adequate financing to acquire access to and complete the retrofit of ethanol plants to isobutanol production, market acceptance and demand for its products and services, and attracting and retaining qualified personnel.

Following the Company's acquisition of Agri-Energy on September 22, 2010, the Company began recording revenue from the sale of ethanol and related products. Because the production of ethanol is not the Company's intended business, the Company will continue to report as a development stage company until it begins to generate revenue from the sale of isobutanol or other products that are or will become the Company's intended business.

Financial Condition—The Company's consolidated financial statements have been prepared on a going concern basis, which contemplates the realization of assets and the satisfaction of liabilities in the normal course of business. For the year ended December 31, 2011, the Company incurred a consolidated net loss of $48,214,000 and had an accumulated deficit of $134,635,000. The Company expects to incur future net losses as it continues to fund the development and commercialization of its product candidates.

The Company has funded its activities since Inception primarily through equity offerings, including the Company's initial public offering in February 2011, and borrowings under the Company's secured debt financing arrangements. The Company expects to obtain funding through additional equity offerings and issuance of debt until it achieves positive cash flow from operations. The Company's cash and cash equivalents at December 31, 2011 totaled $94,225,000. Management expects that cash on hand will provide the Company with funding for at least the next 12 months. If the Company exceeds planned capital expenditure to complete the retrofit of the Agri-Energy Facility to isobutanol production or other estimates to prepare for commercial production of isobutanol at the Agri-Energy Facility, the Company may need to raise additional capital through future equity or debt issuances. There are no assurances that the Company will be able to raise additional funds, or achieve or sustain profitability or positive cash flow from operations. The accompanying consolidated financial statements do not include any adjustments that may result from the Company's inability to raise sufficient funds or achieve profitability.

A summary of the Company's significant accounting policies is as follows:

Principles of Consolidation—The consolidated financial statements include the accounts of Gevo, Inc., Gevo Development and Agri-Energy. All intercompany balances and transactions have been eliminated in consolidation.

Use of Estimates—The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ materially from those estimates.

Concentrations of Credit Risk—The Company's financial instruments that are exposed to concentrations of credit risk consist of cash and cash equivalents in excess of the federally insured limits. The Company's cash and cash equivalents are deposited with high credit quality financial institutions and are primarily in demand deposit accounts. Substantially all ethanol sold through Agri-Energy from the date of acquisition through December 31, 2011 was sold to C&N Ethanol Marketing ("C&N").

Cash and Cash Equivalents—The Company considers all highly liquid investments purchased with a remaining maturity of three months or less at the date of acquisition to be cash equivalents. The Company maintains its cash in bank deposits that at times may exceed federally insured limits.

Accounts Receivable—The Company records receivables for products shipped but for which payment has not yet been received. As of December 31, 2011 and 2010, no allowance for doubtful accounts has been recorded, based upon the expected full collection of the accounts receivable. Substantially all ethanol sold through Agri-Energy from the date of acquisition through December 31, 2011 was sold to C&N. Accounts receivable from C&N made up 58% and 56% of the Company's total accounts receivable balance at December 31, 2011 and 2010, respectively.

Inventories—Corn, ethanol, distiller's grains, enzymes and other inventory items are stated at the lower of cost or market value. Cost is determined by the first-in, first-out method. Ethanol inventory cost consists of the applicable share of raw material, direct labor and manufacturing overhead costs.

Deferred Offering Costs—Deferred offering costs include costs directly attributable to the Company's offering of its equity securities. These costs were deferred and capitalized and were charged against the proceeds of the offering.

Debt Issue Costs and Debt Discount—Debt issue costs are costs incurred in connection with the Company obtaining financing that have been capitalized and are being amortized over the stated maturity period of the related debt, using the effective interest method. Debt discounts incurred with the issuance of long-term debt are amortized to interest expense over the terms of the debt using the effective interest method and are recorded on the consolidated balance sheets as a reduction to long-term debt.

Revenue Recognition—The Company records revenue from the sale of ethanol and related products. The Company recognizes revenue when all of the following criteria are satisfied: persuasive evidence of an arrangement exists; risk of loss and title transfer to the customer; the price is fixed or determinable; and collectability is reasonably assured. Ethanol and related products are generally shipped free on board shipping point. Collectability of revenue is reasonably assured based on historical evidence of collectability between the Company and its customers.

In accordance with the Company's agreements for the marketing and sale of ethanol and related products, commissions due to marketers are deducted from the gross sales price at the time payment is remitted to the Company. Ethanol and related products sales are recorded net of commissions.

Revenue related to government research grants and cooperative agreements is recognized in the period during which the related costs are incurred, provided that the conditions under the awards have been met and only perfunctory obligations are outstanding.

Other research and development program revenue consists of research services and the procurement of the Company's products for purposes of certification and testing. Revenue from research services is recognized over the relevant performance period of the contract. Revenue from the procurement of the Company's products for purposes of certification and testing is recognized upon the transfer of risk of loss and title to the customer.

Cost of Goods Sold—Cost of goods sold includes costs for materials, direct labor and certain plant overhead costs. Direct materials consist of the costs of corn feedstock, denaturant and process chemicals. Direct labor includes compensation of personnel directly involved in the operation of the ethanol plant. Plant overhead costs primarily consist of plant utilities and plant depreciation. Cost of goods sold is mainly affected by the cost of corn and natural gas. Corn is the most significant raw material cost. The Company purchases natural gas to power steam generation in the ethanol production process and to dry the distiller's grains. Cost of goods sold also includes gains or losses from the Company's forward purchase contracts, other than those designated under the normal purchases and normal sales scope exception, and changes in fair value on the Company's exchange traded futures contracts.

Derivative Instruments— The Company's derivative instruments include forward purchase contracts and exchange-traded futures contracts. The Company enters into forward purchase contracts for corn to be used in the production of ethanol. Prior to January 1, 2011, the Company recorded forward purchase contracts as derivative assets or liabilities on the consolidated balance sheets at fair value. The changes in the fair value of these derivatives were recognized as a component of cost of goods sold in the Company's consolidated statements of operations. Effective January 1, 2011, the Company elected the normal purchase and normal sales exception guidance of GAAP for its forward purchase contracts and, as a result, they were not marked to market during 2011. To qualify for the normal purchases and normal sales scope exception, a contract must provide for the purchase or sale of commodities in quantities that are expected to be used or sold over a reasonable period of time in the normal course of operations.

The Company also enters into exchange-traded futures contracts for corn as a means of managing exposure to changes in corn prices. These contracts are recorded as derivative assets or liabilities on the consolidated balance sheets at fair value. Changes in the fair value during a reporting period are recognized to cost of goods sold in the consolidated statements of operations.

Property, Plant and Equipment—Property, plant and equipment are recorded at cost less accumulated depreciation. Provisions for depreciation and amortization are computed using the straight-line method over the assets' estimated useful lives, except for the Company's demonstration plant which is fully depreciated at December 31, 2011. The demonstration plant was depreciated over the contractual term of a development agreement with ICM, Inc. ("ICM"), which prior to an amendment in December 2011, was set to expire on December 31, 2011 (Note 5). Leasehold improvements are amortized over the term of the lease agreement or the service lives of the improvements, whichever is shorter. Assets under construction are depreciated when they are placed into service. Maintenance and repairs are charged to expense as incurred and expenditures for major improvements are capitalized. When assets are retired or otherwise disposed of, the property accounts are relieved of costs and accumulated depreciation and any resulting gain or loss is credited or charged to operations. Capitalized interest on construction in progress is included in property, plant and equipment.

Impairment of Long-Lived Assets—The Company's long-lived assets are evaluated for impairment in accordance with Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") 360, Property, Plant, and Equipment, whenever events or circumstances indicate the carrying amount of the assets may not be fully recoverable. Circumstances which could trigger a review include, but are not limited to, significant decreases in the market price of the asset; significant adverse changes in the business climate, legal or regulatory factors; accumulation of costs significantly in excess of the amount originally expected for the acquisition or construction of the asset; current period cash flow or operating losses combined with a history of losses or a forecast of continuing losses associated with the use of the asset; or expectations that the asset will more likely than not be sold or disposed of significantly before the end of its estimated useful life. The carrying amount of a long-lived asset may not be recoverable if it exceeds the sum of the undiscounted cash flows expected to result from the use and eventual disposition of the assets. No impairment charges have been recorded from Inception to December 31, 2011. The Company has not yet generated positive cash flows from operations, and such cash flows may not materialize for a significant period in the future, if ever. Additionally, the Company may make changes to its business plan that will result in changes to the expected cash flows from long-lived assets. As a result, it is possible that future evaluations of long-lived assets may result in impairment.

Patents—All costs related to filing and pursuing patent applications are expensed as incurred as recoverability of such expenditures is uncertain. Patent-related legal expenses incurred are recorded as selling, general and administrative expense during the years ended December 31, 2011, 2010 and 2009, and from Inception to December 31, 2011, were $1,342,000, $993,000, $743,000 and $4,306,000, respectively.

Beneficial Conversion Feature—The Company recorded a beneficial conversion feature relating to the issuance of Series D-1 preferred stock between March and May 2010 (Note 10). The beneficial conversion feature was recorded as a discount to the Series D-1 preferred stock and was being amortized to retained earnings through September 30, 2011, unless converted earlier. On February 14, 2011, upon completion of the Company's initial public offering, the shares of Series D-1 preferred stock automatically converted to common stock at a rate of 1.9022 shares of common stock for each share of Series D-1 preferred stock.

Research and Development—Research and development costs are expensed as incurred and are recorded as research and development expense in the consolidated statements of operations. The Company's research and development costs consist of expenses incurred to identify, develop, and test its technologies for the production of isobutanol and the development of downstream applications thereof. Research and development expense includes personnel costs, consultants and related contract research, facility costs, supplies, depreciation on property, plant and equipment used in development, license fees and milestone payments paid to third parties for use of their intellectual property and patent rights, and other direct and allocated expenses incurred to support the Company's overall research and development programs.

Income Taxes—The Company accounts for income taxes under FASB ASC 740, Income Taxes. Deferred tax assets and liabilities are recorded for the estimated future tax effects of temporary differences between the tax basis of assets and liabilities and amounts reported in the consolidated balance sheets, as well as operating loss carryforwards. Deferred tax assets are reduced by a valuation allowance if, based upon the weight of available evidence, it is more-likely-than-not that these benefits will not be realized (Note 14). At December 31, 2011 and 2010, the Company had no material unrecognized tax benefits and had no accrued interest or penalties related to uncertain tax positions. The Company classifies interest and penalties arising from the underpayment of income taxes in the consolidated statements of operations as income tax expense.

Stock-Based Compensation—The Company accounts for stock-based compensation for awards to employees in accordance with FASB ASC 718, Compensation-Stock Compensation. Under the provisions of FASB ASC 718, stock-based compensation for awards to employees is measured at the grant date based on the fair value of the awards and is recognized as expense over the required service period of the award. The Company estimates the fair value of stock options issued to employees using the Black–Scholes option-pricing model.

The Company accounts for stock-based awards to non-employees using a fair value method in accordance with FASB ASC 718 and FASB ASC 505-50, Equity-Equity-Based Payments to Non-Employees. The Company determines the estimated fair value of stock options issued to non-employees using the Black–Scholes option-pricing model. The fair values of the stock options and stock-based awards granted to non-employees are remeasured as the services are performed and the awards vest, and the resulting change in value, if any, is recognized as expense during the period the related services are rendered.

Fair Value Measurements and Fair Value of Financial Instruments—Accounting standards define fair value, outline a framework for measuring fair value, and detail the required disclosures about fair value measurements. Under these standards, fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date in the principal or most advantageous market. Standards establish a hierarchy in determining the fair market value of an asset or liability. The fair value hierarchy has three levels of inputs, both observable and unobservable. Standards require the utilization of the highest possible level of input to determine fair value.

Level 1 inputs include quoted market prices in an active market for identical assets or liabilities.

Level 2 inputs are market data, other than Level 1, that are observable either directly or indirectly. Level 2 inputs include quoted market prices for similar assets or liabilities, quoted market prices in an inactive market, and other observable information that can be corroborated by market data.

Level 3 inputs are unobservable and corroborated by little or no market data.

As of December 31, 2011 and 2010, there were no transactions measured at fair value on a nonrecurring basis. The following table shows assets and liabilities measured at fair value on a recurring basis as of December 31, 2011 and 2010, and the input categories associated with those assets and liabilities.


	Fair Value as of December 31, 2011			Fair Value Measurement Using
	Fair Value as of December 31, 2011			Level 1			Level 2		Level 3
Liabilities—Exchange-traded derivatives	$	186,000		$	186,000		$	—	$	—


	Fair Value as of December 31, 2010			Fair Value Measurement Using
				Fair Value Measurement Using
				Level 1			Level 2		Level 3
Liabilities—Fair value of warrant liabilities	$	(2,034,000	)	$	—		$	—	$	(2,034,000	)

Liabilities—Exchange-traded derivatives	$	(405,000	)	$	(405,000	)	$	—	$	—

Assets—Forward purchase contracts for corn	$	361,000		$	—		$	361,000	$	—

The changes in Level 3 liabilities measured at fair value on a recurring basis for the years ended December 31, 2011 and 2010 are as follows:


	Fair Value of Warrant Liabilities
Liabilities:
Balance—December 31, 2009	$	982,000
Initial measurement of warrants issued during the period		177,000
Change in fair value of warrants		2,333,000
Warrants exercised during the period and liability reclassified to additional paid-in-capital		(1,458,000	)

Balance—December 31, 2010	$	2,034,000

Change in fair value of warrants		29,000
Conversion of preferred stock warrants to common stock warrants and reclassification of related liability to additional paid-in-capital (February 14, 2011)		(2,063,000	)

Balance—December 31, 2011	$	—

The carrying value of cash and cash equivalents, receivables, and accounts payable approximate their respective fair values due to the short-term nature of these instruments. Based on borrowing rates which management believes would currently be available to the Company for similar issues of debt, taking into account the current credit risk of the Company and other market factors, the carrying value of the Company's debt obligations approximate their fair value.

The fair value of exchange-traded derivative instruments is based on quoted market prices. The fair value of forward purchase contracts for corn is based upon the price at the delivery location adjusted for basis differentials, counterparty credit quality, the effect of the Company's own credit worthiness, the time value of money and/or the liquidity of the market. Contracts which qualify for the normal purchases and normal sales scope exception to fair value accounting are not marked to market in the financial statements. Effective January 1, 2011, the Company designates all of its forward purchase contracts for corn under the normal purchases and normal sales scope exception and therefore were not marked to market during the year ended December 31, 2011.

Prior to its initial public offering, the Company had derivative liabilities relating to its preferred stock warrants. These derivative instruments were not entered into as hedging activities. The estimated fair value of the preferred stock warrant liabilities were revalued at each balance sheet date, with changes in value recorded as other income or expense in the consolidated statements of operations (Note 11).

While the Company believes that its valuation methods are appropriate and consistent with other market participants, it recognizes that the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date.

Environmental Liabilities—The Company's operations are subject to environmental laws and regulations adopted by various governmental authorities in the jurisdictions in which it operates. These laws require the Company to investigate and remediate the effects of the release or disposal of materials at its locations. Accordingly, the Company has adopted policies, practices and procedures in the areas of pollution control, occupational health and the production, handling, storage and use of hazardous materials to prevent material environmental or other damage, and to limit the financial liability which could result from such events. Environmental liabilities are recorded when the Company's liability is probable and the costs can be reasonably estimated. No environmental liabilities have been recorded as of December 31, 2011.

Net Loss Per Share—Basic net loss per share is computed by dividing the net loss attributable to Gevo, Inc. common stockholders for the period by the weighted-average number of common shares outstanding during the period. Diluted net loss per share is computed by dividing net loss attributable to Gevo, Inc. common stockholders for the period by the weighted-average number of dilutive common shares outstanding during the period. Dilutive shares outstanding are calculated by adding to the weighted shares outstanding any potential (unissued) shares of common stock and warrants based on the treasury stock method.

Diluted net loss per share is the same as basic net loss per share for all periods presented because any potentially dilutive common shares were anti-dilutive. Such potentially dilutive shares are excluded from the computation of diluted net loss per share when the effect would be to reduce net loss per share. Therefore, in periods when a loss is reported, the calculation of basic and dilutive net loss per share results in the same value.

The following potentially dilutive securities were excluded from the calculation of diluted net loss per share during each period as the effect was anti-dilutive:


	December 31, 2011		December 31, 2010
Convertible preferred stock upon conversion to common stock (on an as-converted basis)(1)		—		16,329,703
Warrants to purchase convertible preferred stock (on an as-converted basis)(1)		—		398,032
Warrants to purchase common stock (at period-end)		1,243,820		858,000
Outstanding stock options to purchase common stock (at period-end)		3,261,739		2,894,265
Unvested restricted common stock (at period-end)		284,825		5,729

Total		4,790,384		20,485,729

(1)

The convertible preferred stock and convertible preferred stock warrants were computed on an as-converted basis using a one-to-one conversion rate for all series of preferred stock, except for the Series D-1 preferred stock where the Company used a conversion rate of 1.9022, which was the conversion rate applicable at the closing of the Company's initial public offering on February 14, 2011.

Recent Accounting Pronouncements—In May 2011, the FASB issued Accounting Standards Update ("ASU") No. 2011-04, "Fair Value Measurement (Topic 820): Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRSs." This update amends ASC Topic 820, "Fair Value Measurement and Disclosure." ASU 2011-04 clarifies the application of certain existing fair value measurement guidance and expands the disclosures for fair value measurements that are estimated using significant unobservable (Level 3) inputs. ASU 2011-04 is effective for annual and interim reporting periods beginning on or after December 15, 2011. The new guidance is to be adopted prospectively and early adoption is not permitted. The Company does not expect the adoption of ASU 2011-04 will have a significant impact on its financial position, results of operations or cash flows.

Acquisition Of Agri-Energy

12 Months Ended

Dec. 31, 2011

Acquisition Of Agri-Energy [Abstract]

Acquisition Of Agri-Energy

2. Acquisition of Agri-Energy

In September 2010, Gevo Development acquired Agri-Energy and its ethanol production facility located in Luverne, Minnesota. The Company is currently retrofitting the ethanol production facility to isobutanol production. During the ongoing retrofit, the facility continues to operate as an ethanol production facility. The Company paid a purchase price of approximately $20,602,000. In addition, the Company acquired and paid $4,919,000 for working capital, resulting in a total amount paid of $25,521,000.

The acquisition of Agri-Energy was completed as part of the Company's strategy of acquiring access to ethanol production facilities for future retrofit to produce isobutanol. Upon completion of the acquisition, Gevo Development acquired effective control of Agri-Energy on September 22, 2010. The acquisition was accounted for under the acquisition method of accounting which requires, among other things, that all assets acquired and liabilities assumed be recognized at their fair values as of the acquisition date.

The following table summarizes the fair value of the assets acquired and liabilities assumed as of the acquisition date (September 22, 2010):


Assets acquired:
Cash	$	585,000
Receivables		1,999,000
Inventory		3,570,000
Other current assets		1,256,000
Property, plant and equipment		20,602,000

Total assets acquired	$	28,012,000

Liabilities assumed:
Accounts payable and accrued expenses	$	1,843,000
Other current liabilities		648,000

Total liabilities assumed	$	2,491,000

Net assets acquired	$	25,521,000

The results of Agri-Energy's operations for the year ended December 31, 2011, and for the period from September 23, 2010 through December 31, 2010, are reflected in the Company's consolidated statements of operations for the year ended December 31, 2011 and 2010, respectively.

The revenue and income from operations relating to Agri-Energy for the period from September 23, 2010 through December 31, 2010 was $14,765,000 and $1,025,000, respectively.

Pro forma results of operations for the Company as if the acquisition of Agri-Energy had occurred on January 1, 2009 are as follows (unaudited):


	Year Ended December 31, 2010			Year Ended December 31, 2009
Revenues	$	46,890,000		$	40,768,000
Loss from operations	$	(34,234,000	)	$	(17,990,000	)
Net loss	$	(40,187,000	)	$	(21,256,000	)

The pro forma results above include the combined results of operations of the Company and Agri-Energy, after making certain adjustments, for the years ended December 31, 2010 and 2009, as if the Agri-Energy acquisition had occurred on January 1, 2009. There were no transactions between the Company and Agri-Energy prior to the acquisition on September 22, 2010. There were no significant differences between the accounting policies of the Company and Agri-Energy. The unaudited pro forma results above are prepared for illustrative purposes only and are not necessarily indicative of the results of operations that would have actually been reported had the acquisition occurred on January 1, 2009 nor are they necessarily indicative of the future results of operations of the combined Company.

- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 88-16
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 51, 52
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Appendix F
-Paragraph F4
-Subparagraph e

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 67-73
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6911361&loc=d3e6927-128479

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6972119&loc=d3e1490-128463

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6911361&loc=d3e7008-128479

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6972119&loc=d3e1500-128463

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4926-128472

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4922-128472

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6911361&loc=d3e6996-128479

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6972119&loc=d3e1524-128463

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6972119&loc=d3e1392-128463

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6911361&loc=d3e7000-128479

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472

Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
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-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4934-128472

Reference 17: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
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-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6972119&loc=d3e1497-128463

Reference 18: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6972119&loc=d3e1486-128463

Reference 19: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6972119&loc=d3e1383-128463

+ Details

Property, Plant And Equipment

12 Months Ended

Dec. 31, 2011

Property, Plant And Equipment [Abstract]

Property, Plant And Equipment

3. Property, Plant and Equipment

A summary of property, plant and equipment by classification is as follows:


	Estimated Useful Lives			December 31, 2011			December 31, 2010
Computer, office equipment, and software		3 years		$	614,000		$	581,000
Lab equipment, furniture & fixtures and vehicles		5 years			4,035,000			3,432,000
Leasehold improvements		5 years	(1)		523,000			380,000
Pilot plant		3 years			721,000			721,000
Demonstration plant		2 years	(2)		3,597,000			2,948,000
Construction in progress		—			8,403,000			442,000
Land		—			410,000			410,000
Buildings, site improvements, plant machinery and equipment		10 years			20,359,000			20,093,000
Tools and support equipment		5 years			105,000			87,000

Total property, plant and equipment					38,767,000			29,094,000
Less accumulated depreciation and amortization					(9,990,000	)		(5,629,000	)

Property, plant and equipment—net				$	28,777,000		$	23,465,000

(1)	Leasehold improvements are amortized over the term of the lease agreement or the service lives of the improvements, whichever is shorter.

(2)

Depreciation related to the demonstration plant began in the period the assets were placed in service which was September 2009. The demonstration plant was being depreciated through December 31, 2011, the contractual end date of the development agreement prior to an amendment signed in December 2011 (Note 5).

Depreciation and amortization expense for the years ended December 31, 2011, 2010 and 2009, and from Inception to December 31, 2011, were $4,600,000, $3,188,000, $1,511,000, and $10,292,000, respectively.

The Company capitalized $297,000 of incurred interest to construction in progress during the year ended December 31, 2011. No interest incurred prior to 2011 was required to be capitalized.

- Definition

The entire disclosure for long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. This disclosure may include property plant and equipment accounting policies and methodology, a schedule of property, plant and equipment gross, additions, deletions, transfers and other changes, depreciation, depletion and amortization expense, net, accumulated depreciation, depletion and amortization expense and useful lives, income statement disclosures, assets held for sale and public utility disclosures.

+ References + Details

Inventories

12 Months Ended

Dec. 31, 2011

Inventories [Abstract]

Inventories

4. Inventories

Inventory balances consist of the following:


	December 31, 2011		December 31, 2010
Raw materials:
Corn	$	2,408,000	$	2,516,000
Enzymes and other inputs		151,000		167,000
Finished goods:
Ethanol		349,000		385,000
Distiller's grains		17,000		48,000
Work in process		456,000		301,000
Spare parts		433,000		348,000

Total inventory	$	3,814,000	$	3,765,000

Included in cost of goods sold is depreciation of $2,061,000 and $549,000 for the years ended December 30, 2011 and 2010, respectively.

Significant Agreements	12 Months Ended
Significant Agreements	Dec. 31, 2011
Significant Agreements [Abstract]
Significant Agreements	5. Significant Agreements *Off-Take, Distribution and Marketing Agreements* International Off-Take and Distribution Agreement with Sasol—On July 29, 2011, the Company and Sasol Chemical Industries Limited ("Sasol") entered into an international off-take agreement to market and distribute renewable isobutanol globally. The agreement has an initial term of three years and appoints Sasol as a non-exclusive distributor of high-purity isobutanol in North and South America and as the exclusive distributor for high-purity isobutanol for solvent and chemical intermediate applications in the rest of the world. Beginning upon the Company's first commercial sale of high-purity isobutanol, if Sasol desires to maintain its exclusive distribution rights, Sasol is obligated to either purchase certain minimum quantities of high-purity isobutanol or pay the Company applicable shortfall fees and the Company is obligated to either supply Sasol with certain minimum quantities of high-purity isobutanol or pay Sasol applicable shortfall fees. No amounts have been recorded under this agreement as of December 31, 2011. Exclusive Supply Agreement with LANXESS—On January 14, 2011, the Company entered into an exclusive supply agreement, as amended, with LANXESS Inc. ("LANXESS") pursuant to which LANXESS has granted the Company an exclusive first right to supply LANXESS and its affiliates with certain of their requirements for biobased isobutanol during the term of the agreement. The Company's exclusive first right to supply biobased isobutanol to LANXESS and its affiliates will be subject to the terms of a supply agreement to be mutually agreed upon by the parties at a later date. Additionally, pursuant to the terms of the exclusive supply agreement the Company has granted LANXESS, subject to certain exceptions and conditions, (i) an exclusive first right to acquire its biobased isobutanol to produce isobutylene and butenes for use and sale in the field of chemicals, and (ii) an exclusive right to use the Company's isobutanol to produce butadiene and isobutylene for use in the production of polybutadiene and butyl rubber. The initial term of the mutual exclusivity is ten years, subject to mutual extension. No costs have been incurred under this agreement as of December 31, 2011. Off-Take and Marketing Alliance Agreement and Renewable Fuels Supply Chain Agreement with Mansfield Oil Company—On August 12, 2011, the Company entered into a commercial off-take agreement with Mansfield Oil Company ("Mansfield"), to distribute isobutanol-based fuel into the petroleum market. The agreement allows Mansfield to blend the Company's isobutanol for its own use, and to be a distributor of the Company's isobutanol for a term of five years. The Company also entered into a three-year supply services agreement with C&N, a Mansfield subsidiary, which will provide supply chain services including logistics management, customer service support, invoicing and billing services. No amounts have been recorded under these agreements as of December 31, 2011. Ethanol Marketing Agreement with C&N, a subsidiary of Mansfield Oil Company—Substantially all ethanol sold through Agri-Energy from the date of acquisition through December 31, 2011 was sold to C&N pursuant to an ethanol purchase and marketing agreement. The ethanol purchase and marketing agreement with C&N was entered into on April 1, 2009 and automatically renews for subsequent one-year terms unless either party terminates the agreement 60 days before the end of a term. Under the terms of the agreement, C&N will market substantially all of Agri-Energy's ethanol production from the Agri-Energy Facility and will pay to Agri-Energy the gross sales price paid by the end customer less expenses and a marketing fee. Jet Fuel Supply Agreement with the Defense Logistics Agency (U.S. Air Force)—During September 2011, the Company was awarded a contract for the procurement of up to 11,000 gallons of biojet fuel for the purposes of certification and testing by the U.S. Air Force. The total contract value may be up to $649,000. The term of the agreement is through December 30, 2012. Revenue is recognized upon the transfer of risk of loss and title to the U.S. Air Force. No revenue under this award has been recognized as of December 31, 2011. *Commercialization and Development Agreements* Development and Commercialization Agreements with ICM—In October 2008, the Company signed development and commercialization agreements with ICM. Under the terms of the development agreement, the Company performs commercial-scale isobutanol production trials in ICM's research plant and facility in St. Joseph, Missouri, the demonstration plant. The Company is required to pay for or reimburse ICM for engineering fees, equipment, plant modification costs, project fees and various operating expenses. The development agreement, as amended, was effective through December 31, 2011. In December 2011, the development agreement was amended to extend the term indefinitely. The development agreement, as amended, may be cancelled by either party with 30 days' written notice. During the years ended December 31, 2011, 2010 and 2009, the Company incurred $649,000, $362,000 and $2,587,000, respectively, in capital expenditures with ICM relating to the demonstration plant that are recorded as property, plant and equipment in the Company's consolidated balance sheets. The Company also incurred operating expenses paid to ICM for production trials at the demonstration plant and depreciation expense relating to the demonstration plant, which are recorded as research and development expenses. The commercialization agreement, as amended, is effective through October 15, 2018, and outlines the terms and fees under which ICM acts as the Company's exclusive provider of certain engineering and construction services. Also, under the commercialization agreement, the Company is ICM's exclusive technology partner for the production of butanols, pentanols and propanols from the fermentation of sugars. In addition to amounts recorded under the development and commercialization agreements noted above, the Company has also engaged ICM to perform engineering studies, plant evaluations and other services. In August 2011, the Company entered into a work agreement with ICM whereby ICM will provide engineering, procurement and construction services for the retrofit of ethanol plants. During the years ended December 31, 2011 and 2010, the Company incurred $6,783,000 and $383,000, respectively, in capital expenditures with ICM relating to the retrofit of the Agri-Energy Facility to future isobutanol production, which amounts are recorded within construction in progress on the Company's consolidated balance sheets. Expenses incurred by the Company under its development, commercialization and other agreements with ICM during the years ended December 31, 2011, 2010 and 2009, and from Inception to December 31, 2011, were $2,388,000, $2,349,000, $1,365,000, and $6,132,000, respectively. Joint Research, Development, License and Commercialization Agreement with The Coca-Cola Company —During November 2011, the Company entered into a joint research, development, license and commercialization agreement with The Coca-Cola Company ("Coca-Cola"). During the first two years of the agreement, Coca-Cola will pay the Company a fixed price fee for a research program as defined in the agreement. The Company recognizes these fees as revenue over the performance period. The payments received are not refundable. The Company recognized $98,000 of revenue under this agreement during the year ended December 31, 2011. *License Agreements* License Agreement with Cargill, Incorporated—During February 2009, the Company entered into a license agreement with Cargill, Incorporated ("Cargill") to obtain certain biological materials and license patent rights to use a biocatalyst owned by Cargill. Under the license agreement, Cargill has granted the Company an exclusive, royalty-bearing license, with limited rights to sublicense, to use the patent rights in a certain field, as defined in the license agreement. The license agreement contains five milestone payments totaling approximately $4,300,000 that are payable after each milestone is completed. During 2009, two milestones were completed and the Company recorded the related milestone amounts, along with an up-front signing fee, totaling $875,000, to research and development expense. During March 2010, the Company completed milestone number three and recorded the related milestone amount of $2,000,000 to research and development expense at its present value amount of $1,578,000 because the milestone payment will be paid over a period greater than 12 months from the date it was incurred. Milestones number four and five included in the license agreement representing potential payments of up to $1,500,000 have not been met as of December 31, 2011 and no amounts have been recorded as a liability for these milestones. At December 31, 2011, the present value of the liability, $924,000, was recorded in accounts payable and accrued expenses. The accretion of the liability was recorded to interest expense. Upon commercialization of a product which uses the Cargill biological material or is otherwise covered by the patent rights under the license agreement, a royalty based on net sales is payable by the Company, subject to a minimum royalty amount per year, as defined in the license agreement, and up to a maximum amount per year. The license agreement provides an option for Cargill to purchase a nonexclusive, royalty-bearing license for the use of a Company biocatalyst that utilizes the Cargill biological material or licensed patents for a royalty rate equal to the lowest rate offered to any third party. The Company may terminate the license agreement at any time upon 90 days' written notice. Unless terminated earlier, the license agreement remains in effect until the later of December 31, 2025 and the date that no licensed patent rights remain. *Other* Within its research and development activities, the Company routinely enters into research and license agreements with various entities. Future royalty payments may apply under these license agreements if the technologies are used in future commercial products. In addition, the Company may from time to time make gifts to universities and other organizations to expand research activities in its fields of interest. Any amounts paid under these agreements are generally recorded as research and development expenses as incurred. The Company has been awarded grants or cooperative agreements from a number of government agencies, including the U.S. Department of Energy, U.S. National Science Foundation, U.S. Environmental Protection Agency, Army Research Labs and the U.S. Department of Agriculture. Revenues recorded related to these grants and cooperative agreements are recorded within grant and research and development program revenue on the Company's statements of operations.

- Definition

Tabular disclosure of significant agreements under research and development arrangements accounted for as a contract to perform research and development for others (including royalty arrangements, purchase provisions, license agreements, and commitments to provide additional funding), aggregated by similar arrangements or individually if necessary to understand the effects on the financial statements. Include also the amount of costs incurred under a research and development arrangement accounted for as a contract to perform research and development for others. Aggregation of similar arrangements by type may be appropriate. Include also the amount of compensation earned (contract income) under a research and development arrangement accounted for as a contract to perform research and development for others. Aggregation of similar arrangements by type may be appropriate.

+ References + Details

Gevo Development	12 Months Ended
Gevo Development	Dec. 31, 2011
Gevo Development [Abstract]
Gevo Development	6. Gevo Development Gevo, Inc. formed Gevo Development on September 18, 2009 to finance and develop biorefineries through joint venture or direct acquisition. Biorefinery plants accessed through Gevo Development are intended to be retrofitted using Gevo, Inc.'s integrated fermentation technology to produce isobutanol. Gevo, Inc. currently owns 100% of the outstanding equity interests of Gevo Development as a wholly owned subsidiary. Gevo Development has two classes of membership interests outstanding. Gevo, Inc. is the sole owner of the class A interests. Prior to September 22, 2010, CDP Gevo, LLC ("CDP"), which is beneficially owned by the two co-managing directors of Gevo Development, was the sole owner of the class B interests, which comprise 10% of the outstanding equity interests of Gevo Development. In September 2010, Gevo, Inc. became the sole owner of Gevo Development by acquiring 100% of the class B interests in Gevo Development from CDP pursuant to an equity purchase agreement. In exchange for the class B interests, CDP received aggregate consideration of $1,143,000. The original issuance of the class B interests was considered to be a grant of non-employee stock-based compensation. As vesting of the awards was dependent on counterparty performance conditions (the acquisition and retrofit of a biorefinery plant), no compensation expense had been recorded prior to September 22, 2010 because the lowest aggregate fair value of the awards was zero. Upon the purchase of the class B interests on September 22, 2010, the Company recorded stock-based compensation of $774,000, which reflected the amount paid during the year ended December 31, 2010 for the class B interests that were not dependent on counterparty performance. During the year ended December 31, 2011, the Company recorded stock-based compensation of $296,000 for the amount paid during the period. The Company recorded the final payment amount, which was dependent on the continued employment of the two co-managing directors of Gevo Development, in January 2012. For the years ended December 31, 2011 and 2010, and for the period from September 18, 2009 (formation date of Gevo Development) to December 31, 2011, Gevo, Inc. made capital contributions of $4,946,000, $18,607,000 and $24,303,000, respectively, to Gevo Development. No capital contributions had been made by CDP through September 21, 2010. For the years ended December 31, 2011, 2010 and 2009, and for the period from September 18, 2009 (formation date of Gevo Development) to December 31, 2011, Gevo Development (including Agri-Energy after September 22, 2010, the closing date of the acquisition) incurred a net loss of $691,000, $2,327,000, $731,000 and $3,749,000, respectively, which has been fully allocated to Gevo, Inc.'s capital contribution account based upon its capital contributions (for the period prior to September 22, 2010) and 100% ownership (for the period after September 22, 2010). For financial reporting purposes prior to September 22, 2010, the income or loss allocated to the members of Gevo Development was determined using the hypothetical liquidation at book value method. Under this method, net income or loss is allocated between members by determining the difference between the amount of equity at the beginning of the reporting period and equity at the end of the reporting period, which would be distributed to each member if Gevo Development were to be liquidated as of those dates. Distributions, when and if declared by the board of managers, were allocated, first, to each member for their estimated tax amount, then, for their unreturned capital contributions, and lastly, according to their distribution percentages. Allocation, distribution and voting percentages are determined in accordance with the First Amended and Restated Limited Liability Company Agreement of Gevo Development. Amended and Restated Warrant Agreement— The warrant agreement, as amended, details the terms upon which the Company has granted a warrant to CDP to purchase 858,000 shares of Gevo, In. common stock. The warrant agreement has an exercise price of $2.70 per share which was the estimated fair value of a share of Gevo, Inc.'s common stock on the grant date. The warrant expires in September 2016, unless terminated earlier as provided in the agreement. The warrant shares were initially unvested and vested in increments upon the achievement of specific performance milestones. No amounts had been recorded for these warrants in the Company's consolidated statements of operations through September 21, 2010, as none of the counterparty performance milestones had been met; therefore, the lowest aggregate fair value of the award was zero. On September 22, 2010, the beneficial owners of the equity interests of CDP became employees of Gevo, Inc. and the warrant agreement was amended and restated to provide that 50% of the warrant shares granted under such warrant agreement would vest on September 22, 2010. The remaining warrant shares vest over a two-year period beginning on September 22, 2010, subject to acceleration and termination in certain circumstances, such as the occurrence of a change of control event. The Company valued the warrant at $13,956,000 on September 22, 2010, and recognized 50% of this amount as stock-based compensation on September 22, 2010. The Company is recognizing the remaining 50% over the 24-month vesting period that began on September 22, 2010. When Gevo Development was formed in September 2009, Gevo, Inc., Gevo Development and CDP also entered into the following related agreements: a commercialization agreement, a guaranty agreement and an exchange agreement. In August and September 2010, the commercialization agreement, the guaranty agreement and the exchange agreement were all terminated. Since its formation, Gevo Development has been and continues to be considered a variable interest entity. Gevo, Inc., the primary beneficiary of Gevo Development, has both (i) the power to direct the activities of Gevo Development that most significantly impact Gevo Development's economic performance and (ii) the obligation to absorb losses of Gevo Development that could potentially be significant to Gevo Development or the right to receive benefits from Gevo Development that could potentially be significant to Gevo Development. As such, Gevo Development is consolidated. The accounts of Agri-Energy are consolidated within Gevo Development as a wholly owned subsidiary. As of December 31, 2011 and 2010, Gevo Development does not have any assets that can be used only to settle obligations of Gevo Development. However, under the terms of Agri-Energy's loan and security agreement with TriplePoint Capital LLC ("TriplePoint"), as amended, subject to certain limited exceptions, Agri-Energy is only permitted to pay dividends if certain conditions are satisfied. As of December 31, 2011 and 2010, the creditors of Gevo Development have recourse to the general credit of Gevo, Inc. with the exception of $4,462,000 and $4,785,000, respectively, which are recorded within current liabilities, which includes the liabilities of Agri-Energy. No gain or loss was recognized by the Company upon the initial consolidation of Gevo Development.

- Definition

Tabular disclosure of the equity interest issued or issuable in a business acquisition (or series of individually immaterial business acquisitions) planned, initiated, or completed during the period.

+ References + Details

Redfield Energy, LLC	12 Months Ended
Redfield Energy, LLC	Dec. 31, 2011
Redfield Energy, LLC [Abstract]
Redfield Energy, LLC	7. Redfield Energy, LLC On June 15, 2011, Gevo Development entered into an isobutanol joint venture agreement (the "Joint Venture Agreement") with Redfield Energy, LLC, a South Dakota limited liability company ("Redfield"), and executed the second amended and restated operating agreement of Redfield (together, the "Joint Venture Documents"). Under the terms of the Joint Venture Documents, Gevo Development and Redfield have agreed to work together to retrofit Redfield's approximately 50 million gallon per year ethanol production facility located near Redfield, South Dakota (the "Redfield Facility") for the commercial production of isobutanol. Under the terms of the Joint Venture Agreement, Redfield has issued 100 Class G membership units in Redfield (the "Class G Units") to Gevo Development in exchange for a payment of $1,000, which has been recorded on the Company's consolidated balance sheet in deposits and other assets. Gevo Development is the sole holder of Class G units, which entitle Gevo Development to certain information and governance rights with respect to Redfield, including the right to appoint two members of Redfield's 11-member board of managers. The Class G units currently carry no interest in the allocation of profits, losses or other distributions of Redfield and no voting rights. Such rights will vest upon the commencement of commercial isobutanol production at the Redfield Facility, at which time Gevo Development anticipates consolidating Redfield's operations because Gevo anticipates it will control the activities that are most significant to the entity. Gevo Development will be responsible for all costs associated with the retrofit of the Redfield Facility. Redfield will remain responsible for certain expenses incurred by the facility including certain repair and maintenance expenses and any costs necessary to ensure that the facility is in compliance with applicable environmental laws. The Company anticipates that the Redfield Facility will continue its current ethanol production activities during much of the retrofit. Once the retrofit assets have been installed, the ethanol production operations will be suspended to enable testing of the isobutanol production capabilities of the facility (the "Performance Testing Phase"). During the Performance Testing Phase, Gevo Development will be entitled to receive all revenue generated by the Redfield Facility and will make payments to Redfield to cover the costs incurred by Redfield to operate the facility plus the profits, if any, that Redfield would have received if the facility had been producing ethanol during that period (the "Facility Payments"). Gevo Development has also agreed to maintain an escrow fund during the Performance Testing Phase as security for its obligation to make the Facility Payments. If certain conditions are met, commercial production of isobutanol at the Redfield Facility will begin upon the earlier of the date upon which certain production targets have been met or the date upon which the parties mutually agree that commercial isobutanol production at the Redfield Facility will be commercially viable at the then-current production rate. At that time, (i) Gevo Development will have the right to appoint a total of four members of Redfield's 11-member board of managers, and (ii) the voting and economic interests of the Class G units will vest and Gevo Development, as the sole holder of the Class G Units, will be entitled to a percentage of Redfield's profits, losses and distributions, to be calculated based upon the demonstrated isobutanol production capabilities of the Redfield Facility. Gevo Development, or one of its affiliates, will be the exclusive marketer of all products produced by the facility once commercial production of isobutanol has begun. Additionally, Gevo, Inc. will license the technology necessary to produce isobutanol at the facility to Redfield, subject to the continuation of the marketing arrangement described above. In the event that the isobutanol production technology fails or Redfield is permanently prohibited from using such technology, Gevo Development will forfeit the Class G Units and lose the value of its investment in Redfield. Gevo, Inc. entered into a guaranty effective as of June 15, 2011, pursuant to which it has unconditionally and irrevocably guaranteed the payment by Gevo Development of any and all amounts owed by Gevo Development pursuant to the terms and conditions of the Joint Venture Agreement and certain other agreements that Gevo Development and Redfield expect to enter into in connection with the retrofit of the Redfield Facility. The Company has begun the project engineering and permitting process of the Redfield retrofit. As of December 31, 2011, the Company has incurred $66,000 in costs for the retrofit of the Redfield Facility which have been recorded on the Company's consolidated balance sheet in deposits and other assets.

Secured Long-Term Debt

12 Months Ended

Dec. 31, 2011

Secured Long-Term Debt [Abstract]

Secured Long-Term Debt

8. Secured Long-Term Debt

The carrying value of the secured long-term debt included in the Company's consolidated balance sheets at December 31, 2011 and 2010 consists of the following:


	December 31, 2011			December 31, 2010
Long-term debt, unpaid principal plus final/end-of-term payments	$	30,716,000		$	22,038,000
Less unamortized debt discounts for final/end-of-term payments and original fair value of warrants issued with debt		(2,473,000	)		(1,606,000	)

		28,243,000			20,432,000
Less current portion		(3,491,000	)		(1,785,000	)

Long-term portion of the long-term debt	$	24,752,000		$	18,647,000

Lighthouse Loan and Security Agreement. On December 18, 2006, Gevo, Inc. entered into a loan and security agreement, as amended, with Lighthouse Capital Partners V, L.P. ("Lighthouse"). On August 6, 2010, the Company repaid $5,000,000 in outstanding principal, as well as $250,000 of the final payment, under the promissory note issued in connection with the loan and security agreement. As of December 31, 2011, the Company's outstanding principal balance on its loan with Lighthouse was $1,037,000. The promissory note bears interest at a rate of 12% per annum, required interest only payments during the year ended December 31, 2010, and requires principal plus interest repayments of equal amounts over the 18 months commencing January 1, 2011 and a final payment of $204,000 due on July 1, 2012.

Under the terms of the loan and security agreement, the Company is prohibited from granting a security interest in its intellectual property assets to any other entity until Lighthouse is paid in full, and Lighthouse maintains a security interest in the assets, including equipment and fixtures, financed by the proceeds of each original loan advance made under the loan agreement until such time as the loan is paid in full. The Lighthouse agreement does not contain financial ratio covenants, but does impose certain affirmative and negative covenants, which include prohibiting the Company from paying any dividends or distributions or creating any liens against the collateral as defined in the agreement, as amended. The Company cannot borrow any further amounts under its agreement with Lighthouse. At December 31, 2011, the Company was in compliance with the Lighthouse financial covenants.

Gevo Loan Agreement. In August 2010, concurrently with the execution of the agreement to acquire Agri-Energy in Luverne, Minnesota, Gevo, Inc. entered into a loan and security agreement with TriplePoint, pursuant to which it borrowed $5,000,000 (the "Gevo Loan Agreement"). The Gevo Loan Agreement includes customary affirmative and negative covenants for agreements of this type and events of default, including disposing of certain assets, granting or otherwise allowing the imposition of a lien against certain assets, incurring certain amounts of additional indebtedness, or acquiring or merging with another entity, excluding Agri-Energy, unless the Company receives the prior approval of TriplePoint. The aggregate amount outstanding under the Gevo Loan Agreement bears interest at a rate equal to 13%, is subject to an end-of-term payment equal to 8% of the amount borrowed and is secured by substantially all of the assets of Gevo, Inc., other than its intellectual property. The loan is also secured by substantially all of the assets of Agri-Energy, LLC. Additionally, under the terms of each of (i) the Gevo Loan Agreement and (ii) Gevo, Inc.'s guarantee of Agri-Energy's obligations under the Original Agri-Energy Loan Agreement described below, Gevo, Inc. is prohibited from granting a security interest in its intellectual property assets to any other entity until both TriplePoint loans are paid in full. The loan matures on August 31, 2014, and provides for interest-only payments during the first 24 months. An additional interest-only period of 6 months may be elected in the event that Gevo, Inc. begins producing isobutanol at its Agri-Energy Facility by June 30, 2012. Gevo, Inc. used the funds from this loan to repay a portion of its existing indebtedness with Lighthouse. At December 31, 2011, the Company was in compliance with the financial covenants under the Gevo Loan Agreement.

Original Agri-Energy Loan Agreement. In August 2010, Gevo Development borrowed $12,500,000 from TriplePoint to finance its acquisition of Agri-Energy. In September 2010, upon completion of the acquisition, the loan and security agreement was amended to make Agri-Energy, LLC the borrower under the facility. This loan and security agreement (the "Original Agri-Energy Loan Agreement") includes customary affirmative and negative covenants for agreements of this type and events of default. The aggregate amount outstanding under the Original Agri-Energy Loan Agreement bears interest at a rate equal to 13% and is subject to an end-of-term payment equal to 8% of the amount borrowed. The loan is secured by the equity interests of Agri-Energy, LLC held by Gevo Development and substantially all the assets of Agri-Energy, LLC. The loan matures on September 1, 2014, and provides for interest-only payments during the first 24 months. An additional interest-only period of 6 months may be elected in the event that Gevo, Inc. begins producing isobutanol at its Agri-Energy Facility by June 30, 2012. The loan is guaranteed by Gevo, Inc. pursuant to a continuing guaranty executed by Gevo, Inc. in favor of TriplePoint, which is secured by substantially all of the assets of Gevo, Inc., other than its intellectual property. At December 31, 2011, the Company was in compliance with the financial covenants under the Original Agri-Energy Loan Agreement.

Amended Agri-Energy Loan Agreement. In October 2011, Agri-Energy entered into an amended and restated loan and security agreement (the "Amended Agri-Energy Loan Agreement") with TriplePoint. The Amended Agri-Energy Loan Agreement amends and restates the Original Agri-Energy Loan Agreement. The Amended Agri-Energy Loan Agreement includes customary affirmative and negative covenants for agreements of this type and events of default. The Amended Agri-Energy Loan Agreement provides Agri-Energy with additional term loan facilities of up to $15,000,000 (the "New Loan") (which amount is in addition to the existing $12,500,000 term loan provided under the Original Agri-Energy Loan Agreement, which term loan remains in place under the Amended Agri-Energy Loan Agreement), the proceeds of which will be used to pay a portion of the costs, expenses, and other amounts associated with the retrofit of Agri-Energy's ethanol plant in Luverne, Minnesota to produce isobutanol. The loan matures on October 31, 2015 with the last monthly amortization payment due on the date of such advance. The aggregate amount outstanding under the New Loan bears interest at a rate of 11% and is subject to an end-of-term payment equal to 5.75% of the amount borrowed. The New Loan provides for interest-only payments through July 1, 2012 and an additional interest-only period of 6 months on the New Loan may be elected in the event that the Company has received net offering proceeds of at least $75 million from one or more secondary equity offerings by June 30, 2012. Any borrowings in excess of 50% of the amount incurred for the retrofit the Agri-Energy Facility, calculated as incurred in total by 6.5 months from the date of the advance, must be immediately repaid to TriplePoint. On October 20, 2011, Agri-Energy borrowed $10,000,000 under the Amended Agri-Energy Loan Agreement. On January 6, 2012, Agri-Energy borrowed an additional $5,000,000 under this facility, bringing the total borrowed under the New Loan to $15,000,000. Upon the Company's request and the additional approval of TriplePoint, the Company may borrow an additional $5,000,000 under the Amended Agri-Energy Loan Agreement increasing the maximum amount of the New Loan to $20,000,000. At December 31, 2011, the Company was in compliance with the financial covenants under the Amended Agri-Energy Loan Agreement.

The Amended Agri-Energy Loan Agreement provides that Agri-Energy will secure all of its obligations under the Amended Agri-Energy Loan Agreement and any other loan documents by granting to TriplePoint a security interest in and lien upon all or substantially all of its assets. Gevo, Inc. has guaranteed Agri-Energy's obligations under the Amended Agri-Energy Loan Agreement. As additional security, concurrently with the execution of the Amended Agri-Energy Loan Agreement, (i) Gevo Development entered into a limited recourse continuing guaranty in favor of TriplePoint, (ii) Gevo Development entered into an amended and restated limited recourse membership interest pledge agreement in favor of TriplePoint, pursuant to which it pledged the membership interests of Agri-Energy as collateral to secure the obligations under its guaranty and (iii) Gevo, Inc. entered into an amendment to its security agreement with TriplePoint, which secures its guarantee of Agri-Energy's obligations (including up to $32,500,000 in term loans) under the Amended Agri-Energy Loan Agreement.

Interest expense, net of amounts capitalized to construction in progress, related to the secured long-term debt for the years ended December 31, 2011, 2010 and 2009, and from Inception to December 31, 2011, was $3,390,000, $2,207,000, $1,103,000 and $7,172,000, respectively, of which $928,000, $762,000, $235,000 and $2,029,000, respectively, was for the accretion of debt discounts relating to the final/end-of-term payments, amortization of debt issue costs and the accretion of debt discounts relating to the grant date value of the warrants issued in connection with the debt.

The following is a summary of principal maturities of long-term debt and the final/end-of-term payments as of December 31, 2011, assuming the extended interest-only periods are not elected:


	Principal		Final Payment		Total
2012	$	4,254,000	$	204,000	$	4,458,000
2013		11,309,000		—		11,309,000
2014		10,056,000		1,400,000		11,456,000
2015		2,918,000		575,000		3,493,000

	$	28,537,000	$	2,179,000	$	30,716,000

In connection with signing and borrowing under the loans with Lighthouse and TriplePoint, the Company issued warrants to purchase shares of the Company's preferred stock. The issuance date fair value of these warrants was recorded as a discount against the debt (debt discount) and amortized to interest expense over the terms of the loans. The warrants that were issued prior to the Company's initial public offering were, while they were exercisable for preferred stock, considered to be derivative instruments (Note 11).

From December 2006 through December 31, 2009, the Company issued to Lighthouse warrants to purchase an aggregate of 169,247 shares of the Company's convertible preferred stock at a weighted-average exercise price of $5.38. These warrants converted to warrants exercisable for 169,247 shares of the Company's common stock upon completion of its initial public offering on February 14, 2011. In March 2011, Lighthouse completed a cashless net exercise of the warrants that had been issued to them which resulted in the Company issuing 122,424 shares of its common stock to Lighthouse.

In connection with signing and borrowing on the loans with TriplePoint in August and September 2010, the Company issued warrants to TriplePoint to purchase an aggregate of 105,140 shares of Series D-1 convertible preferred stock at an exercise price of $17.12. The warrants became exercisable for 199,999 shares of the Company's common stock upon completion of its initial public offering on February 14, 2011. The warrants may be exercised until August 5, 2017.

Concurrent with the execution of the Amended Agri-Energy Loan Agreement in October 2011, Gevo, Inc. and TriplePoint entered into a warrant agreement pursuant to which TriplePoint is entitled to purchase up to 188,442 shares of Gevo, Inc.'s common stock at a price of $7.96 per share. As of December 31, 2011, the Company has issued warrants to purchase 157,035 shares of the Company's common stock under this warrant agreement. In January 2012, Agri-Energy borrowed an additional $5 million under the Amended Agri-Energy Loan Agreement. Concurrent with the borrowing, Gevo, Inc. issued warrants to purchase 31,407 shares of its common stock at a price per share of $7.96. The warrants may be exercised until October 20, 2018.

The warrants issued to TriplePoint during August and September 2010, were valued on the issuance dates based upon an option-pricing model using a risk-free interest rate of 0.15%, expected volatility between 49.14% and 61.90% and a term of 0.17 years. The warrants issued to TriplePoint during October 2011 were valued using a risk-free interest rate of 1.64%, expected volatility of 75.74% and a term of 7 years.

Accounts Payable And Accrued Expenses

12 Months Ended

Dec. 31, 2011

Accounts Payable And Accrued Expenses [Abstract]

Accounts Payable And Accrued Expenses

9. Accounts Payable and Accrued Expenses

Accounts payable and accrued expenses in the consolidated balance sheets at December 31, 2011 and 2010 consisted of the following:


	December 31, 2011		December 31, 2010
Accounts payable—trade	$	7,070,000	$	4,818,000
Accrued expenses—Cargill license agreement		924,000		924,000
Accrued employee compensation and related expenses		941,000		586,000
Accrued expenses—ICM		1,634,000		163,000
Accrued deferred offering costs		—		548,000
Other accrued expenses		1,871,000		864,000

	$	12,440,000	$	7,903,000

Capital Stock	12 Months Ended
Capital Stock	Dec. 31, 2011
Capital Stock [Abstract]
Capital Stock	10. Capital Stock Initial Public Offering—On February 14, 2011, the Company completed its initial public offering issuing 8,222,500 shares of common stock at an offering price of $15.00 per share, resulting in net proceeds of $110,408,000, after deducting underwriting discounts and commissions and other offering costs. Upon the closing of the initial public offering, the Company's outstanding shares of convertible preferred stock were automatically converted into 16,329,703 shares of common stock and the outstanding convertible preferred stock warrants were automatically converted into common stock warrants to purchase a total of 398,032 shares of common stock. The net proceeds from the initial public offering, after deducting underwriting discounts and commissions and offering costs, have been recorded in stockholders' equity. In connection with the closing of the initial public offering, the Company amended and restated its certificate of incorporation to increase its authorized number of shares of common stock to 100,000,000 and to authorize the issuance of 5,000,000 shares of preferred stock. The holder of each share of common stock is entitled to one vote. The board of directors has the authority, without action by its stockholders, to designate and issue shares of preferred stock in one or more series and to fix the rights, preferences, privileges and restrictions thereof. The Company's amended and restated certificate of incorporation provides that the Company's board of directors will be divided into three classes, with staggered three-year terms and provides that all stockholder actions must be effected at a duly called meeting of the stockholders and not by a written consent. The amended and restated certificate of incorporation also provides that only the board of directors may call a special meeting of the stockholders and requires the approval of either a majority of the directors then in office or 66 2/3% of the voting power of all then outstanding capital stock for the adoption, amendment or repeal of any provision of the Company's amended and restated bylaws. In addition, the amendment or repeal of certain provisions of the Company's amended and restated certificate of incorporation requires the approval of 66 2/3% of the voting power of all then outstanding capital stock. Convertible Preferred Stock—All shares of the Company's convertible preferred stock automatically converted into shares of common stock upon the Company's initial public offering. Series D-1—Between March and May 2010, the Company issued 1,843,675 shares of Series D-1 preferred stock at a price of $17.12 per share for gross cash proceeds of approximately $31,564,000 and issued 58,412 shares of Series D-1 preferred stock at $17.12 per share in exchange for $1,000,000 of future services to be provided by ICM. The 58,412 shares issued to ICM in exchange for the credit against future services are fully vested, non-forfeitable and non-cancellable. The Company had used the full amount of its prepaid credit with ICM prior to March 31, 2011, which had been recorded in prepaid expenses and other current assets on the Company's balance sheet. The Series D-1 preferred stock was considered to have a beneficial conversion feature because the conversion ratio would adjust from the initial conversion rate of one common share for each preferred share to two common shares for each preferred share if an initial public offering or qualified financing had not occurred on or before September 30, 2011. At the issuance dates of the Series D-1 between March and May 2010, the Company recorded the beneficial conversion feature at its aggregate intrinsic value of approximately $5,744,000 as a discount on the preferred stock with a corresponding credit to additional paid-in capital. This discount was recorded as a deemed dividend and was being amortized as a debit to retained earnings and a credit to additional paid-in capital. For the period from January 1, 2011 to the closing of the Company's initial public offering on February 14, 2011, the Company recorded a deemed dividend – amortization of beneficial conversion feature on the Series D-1 convertible preferred stock of $495,000 relating to the issuance of Series D-1 convertible preferred stock. Upon closing of the initial public offering on February 14, 2011 and the automatic conversion of the Company's Series D-1 preferred stock to common stock, the Company recalculated the intrinsic value of the beneficial conversion feature using the adjusted conversion ratio applied against the original commitment date estimated fair value of the underlying common stock. The amount of the recalculated intrinsic value of the beneficial conversion feature exceeded the previously amortized amount of the beneficial conversion feature by $599,000, which amount was immediately amortized to retained earnings and additional paid-in capital contemporaneously with the closing of the initial public offering. Upon the closing of the Company's initial public offering, no additional amortization of the beneficial conversion feature relating to the Series D-1 preferred stock will be recorded. Warrants—In September 2010, a holder of Series C preferred stock warrants exercised its warrants to purchase 108,076 shares of Series C preferred stock at an exercise price of $5.48 per share resulting in total proceeds to the Company of $592,000. Upon exercise of the warrant, the Company reclassified $1,458,000 from preferred stock warrant liability to equity. As of December 31, 2010, the Company had issued and outstanding 858,000 warrants to CDP (Note 6) that were exercisable into common stock and 303,173 warrants to TriplePoint, Lighthouse and investors that were exercisable into preferred stock. These 303,173 preferred stock warrants became exercisable for 398,032 shares of the Company's common stock upon completion of the Company's initial public offering on February 14, 2011. In March 2011, Lighthouse completed a cashless net exercise of the 169,247 warrants that had been issued to them which resulted in the Company issuing 122,424 shares of its common stock to Lighthouse. In October 2011, the Company issued warrants to TriplePoint to purchase an aggregate of 157,035 shares of common stock (Note 8). As of December 31, 2011, the Company has issued and outstanding an aggregate of 1,243,820 warrants that are exercisable into common stock at a weighted-average exercise price of $4.44.

- Definition

The entire disclosure for shareholders' equity, comprised of portions attributable to the parent entity and noncontrolling interest, if any, including other comprehensive income (as applicable). Including, but not limited to: (1) balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings; (2) accumulated balance for each classification of other comprehensive income and total amount of comprehensive income; (3) amount and nature of changes in separate accounts, including the number of shares authorized and outstanding, number of shares issued upon exercise and conversion, and for other comprehensive income, the adjustments for reclassifications to net income; (4) rights and privileges of each class of stock authorized; (5) basis of treasury stock, if other than cost, and amounts paid and accounting treatment for treasury stock purchased significantly in excess of market; (6) dividends paid or payable per share and in the aggregate for each class of stock for each period presented; (7) dividend restrictions and accumulated preferred dividends in arrears (in aggregate and per share amount); (8) retained earnings appropriations or restrictions, such as dividend restrictions; (9) impact of change in accounting principle, initial adoption of new accounting principle and correction of an error in previously issued financial statements; (10) shares held in trust for Employee Stock Ownership Plan (ESOP); (11) deferred compensation related to issuance of capital stock; (12) note received for issuance of stock; (13) unamortized discount on shares; (14) description, terms, and number of warrants or rights outstanding; (15) shares under subscription and subscription receivables, effective date of new retained earnings after quasi-reorganization and deficit eliminated by quasi-reorganization and, for a period of at least ten years after the effective date, the point in time from which the new retained dates; and (16) retroactive effective of subsequent change in capital structure.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Regulation S-X (SX)
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-Section 08
-Paragraph d

Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Research Bulletin (ARB)
-Number 43
-Chapter 1
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-Paragraph 7, 11A
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Preferred Stock Warrant Liabilities	12 Months Ended
Preferred Stock Warrant Liabilities	Dec. 31, 2011
Preferred Stock Warrant Liabilities [Abstract]
Preferred Stock Warrant Liabilities	11. Preferred Stock Warrant Liabilities Effective January 1, 2009, the Company adopted the provisions of Emerging Issues Task Force (EITF) 07-05, Determining Whether an Instrument (or Embedded Feature) Is Indexed to an Entity's Own Stock, which was primarily codified into FASB ASC 815, Derivatives and Hedging ("ASC 815"). As a result of adopting ASC 815, warrants to purchase shares of the Company's preferred stock previously treated as equity were reclassified as derivative liabilities. Upon the closing of the Company's initial public offering on February 14, 2011, the preferred stock warrants that were previously recorded as liabilities on the Company's consolidated balance sheet were automatically converted to common stock warrants. Upon this conversion, the related preferred stock warrant liability of $2,063,000 was reclassified to additional paid-in capital and will no longer be marked to fair value. From January 1, 2009 through February 14, 2011, changes in the fair value of the preferred stock warrants were recorded as a non-cash expense in the Company's consolidated statements of operations. These non-cash expenses totaled $29,000, $2,333,000, $490,000 and $2,852,000, respectively, during the years ended December 31, 2011, 2010 and 2009, and from Inception to December 31, 2011.

Derivative Instruments

12 Months Ended

Dec. 31, 2011

Derivative Instruments [Abstract]

Derivative Instruments

12. Derivative Instruments

Since the acquisition of Agri-Energy on September 22, 2010, the Company's activities expose it to a variety of market risks, including the effects of changes in commodity prices. These financial exposures are monitored and managed by the Company as an integral part of its overall risk management program. The Company's risk management program focuses on the unpredictability of financial and commodities markets and seeks to reduce the potentially adverse effects that the volatility of these markets may have on its operating results.

The Company periodically enters into forward purchase contracts for corn to ensure supply and manage the price of this commodity. These transactions are considered to be derivatives and prior to January 1, 2011 were recorded on the consolidated balance sheet as assets and liabilities based on each derivative's fair value. The changes in the fair value of these derivative contracts were recognized in income, as a component of cost of goods sold. Effective January 1, 2011, the Company designates all of its forward purchase contracts for corn under the normal purchases and normal sales scope exception and therefore were not marked to market during the year ended December 31, 2011.

The Company generally follows a policy of using exchange-traded futures contracts to reduce its net position in agricultural commodity inventories and forward cash purchase contracts to reduce price risk. Exchange-traded futures contracts are valued at market price and are recorded as derivative assets or derivative liabilities in the consolidated balance sheet. Changes in market price are recorded in cost of goods sold.

The Company's derivatives do not include any credit risk related contingent features. At December 31, 2011 and 2010, the Company had $474,000 and $624,000, respectively, in a margin deposit account for it exchange-traded futures contracts. The Company has not designated any of its derivatives as hedges for financial accounting purposes. The Company did not have any derivative assets or liabilities prior to September 22, 2010 other than the preferred stock warrants described in Note 11.

The Company incurred realized (gains)/losses of $(596,000), $1,098,000 and $502,000 on its exchange-traded futures contracts for the years ended December 31, 2011 and 2010, and from Inception to December 31, 2011, respectively, which have been recorded within cost of goods sold.

The following table summarizes the unrealized (gains)/losses of the Company's derivative instruments that were recorded in cost of goods sold in the consolidated statements of operations.


	Years Ended December 31,
	2011			2010
Statement of Operations Location
Exchange-traded futures contracts—cost of goods sold—unrealized (gains)/losses	$	(219,000	)	$	(243,000	)
Forward purchase contracts—cost of goods sold—unrealized (gains)/losses	$	361,000		$	(318,000	)

The following table represents the Company's net long and short positions regardless of whether the derivative instruments qualify for the normal purchase and normal sales scope exception.


Year of Expiration	December 31, 2011 Corn Net Long (Short) Position Bushels			December 31, 2010 Corn Net Long (Short) Position Bushels
2011		—			(309,000	)
2012		(77,000	)		—

- Definition

The entire disclosure for the entity's entire derivative instruments and hedging activities. Describes an entity's risk management strategies, derivatives in hedging activities and non-hedging derivative instruments, the assets, obligations, liabilities, revenues and expenses arising therefrom, and the amounts of and methodologies and assumptions used in determining the amounts of such items.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 45
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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+ Details

Stock-Based Compensation

12 Months Ended

Dec. 31, 2011

Stock-Based Compensation [Abstract]

Stock-Based Compensation

13. Stock-Based Compensation

2006 Omnibus Securities and Incentive Plan—During 2006, the Company established the Gevo, Inc. 2006 Omnibus Securities and Incentive Plan (the "2006 Incentive Plan"). Pursuant to the 2006 Incentive Plan, the Company granted stock awards to employees, directors, and consultants of the Company. Upon adoption of the Gevo, Inc. 2010 Stock Incentive Plan (the "2010 Plan"), no further grants can be made under the 2006 Incentive Plan. To the extent outstanding awards under the 2006 Incentive Plan expire, or are forfeited, cancelled, settled, or become unexercisable without the issuance of shares, the shares of common stock subject to such awards will be available for future issuance under the 2010 Plan.

Employee Stock Purchase Plan— In February 2011, the Company's stockholders approved the Gevo, Inc. Employee Stock Purchase Plan ("ESPP"). The offering periods for the ESPP are from January 1 to June 30 and from July 1 to December 31 of each calendar year. The Company has reserved 1,285,643 shares of common stock for issuance under the ESPP, of which 1,276,879 shares as of December 31, 2011 are available for future issuance. The purchase price of the common stock under the ESPP is 85% of the lower of the fair market value of a share of common stock on the first or last day of the purchase period.

The Company recorded $54,000 of stock-based compensation expense related to the ESPP during the year ended December 31, 2011. Stock-based compensation expense is based upon the Black-Scholes fair value of the employee stock purchase rights. The following table sets forth the weighted-average assumptions used in the fair value calculation of the employee stock purchase rights.


	Year Ended December 31,
	2011			2010
Risk-free interest rate		0.10	%		—
Expected dividend yield		—			—
Expected volatility factor		81.27	%		—
Expected option life (in years)		0.50			—

2010 Stock Incentive Plan—In February 2011, the Company's stockholders approved the 2010 Plan. The Company has reserved 2,571,286 shares of common stock for issuance under the 2010 Plan. At December 31, 2011, there were 1,665,802 shares available for grant under the 2010 Plan.

Stock Options—A summary of stock option activity for grants to employees and non-employees is presented below:


	Number of Options			Weighted- Average Exercise Price			Weighted- Average Remaining Contractual Term (years)		Aggregate Intrinsic Value
Options outstanding—December 31, 2008		1,876,134			0.76
Granted		863,720			2.70
Canceled or forfeited		(191,428	)		(0.79	)
Exercised		(834	)		(0.49	)

Options outstanding—December 31, 2009		2,547,592		$	1.42

Granted		446,880		$	10.45
Canceled or forfeited		(68,660	)		(1.03	)
Exercised		(31,547	)		(0.52	)

Options outstanding—December 31, 2010		2,894,265		$	2.83			7.90	$	34,936,000

Granted		607,982		$	15.81
Canceled or forfeited		(14,357	)		16.01
Exercised		(226,151	)		0.75

Options outstanding—December 31, 2011		3,261,739		$	5.34			7.43	$	10,620,000

Options exercisable—December 31, 2011		1,755,686		$	3.19			6.83	$	7,166,000

Options vested and expected to vest—December 31, 2011		3,218,014		$	5.31			7.42	$	10,520,000

Additional information related to the Company's stock options is summarized below:


	Year Ended December 31,						Cumulative Amounts From Inception to December 31,
	2011		2010		2009		2011
Weighted-average grant-date fair value of option awards granted	$	10.74	$	6.99	$	1.92	$	3.42
Intrinsic value of options exercised (determined as of the date of option exercise)	$	1,703,000	$	69,000	$	2,000	$	1,792,000

As of December 31, 2011, the Company had $5,945,000 of total unrecognized compensation expense, net of estimated forfeitures, which is expected to be recognized over a weighted-average period of 2.47 years.

The Company settles stock option exercises with newly issued common shares. No tax benefits were realized by the Company in connection with these exercises as the Company maintains net operating loss carryforwards and has established a valuation allowance against the entire tax benefit. Information about stock options outstanding and exercisable at December 31, 2011 is as follows:


	Options Outstanding						Options Exercisable
Range of Exercise Prices	Number of Options		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life in Years		Number of Options		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life in Years
$ 0.17 to $0.49		759,835	$	0.46		5.42		728,528	$	0.46		5.42
$1.16 to $2.70		1,460,141	$	2.06		7.35		707,375	$	2.17		7.48
$6.15 to $8.73		53,578	$	6.88		9.86		902	$	8.73		9.71
$10.07 to $14.81		552,780	$	11.26		8.66		253,290	$	10.30		8.46
$16.19 to $19.14		435,405	$	17.14		9.34		65,591	$	17.17		9.29

The fair values of stock options granted during the years ended December 31, 2011, 2010 and 2009 were estimated using the following weighted average assumptions:


	Year Ended December 31,
	2011			2010			2009
Risk-free interest rate		1.98	%		2.14	%		2.33	%
Expected dividend yield		None			None			None
Expected volatility factor		79.04	%		78.64	%		78.25	%
Expected option life (in years)		5.81			5.34			5.47

The risk-free interest rate was based on the U.S. Treasury yield curve in effect on the grant date for instruments with a term similar to the expected life of the option. The volatility factor was determined based upon management's estimate using inputs from comparable public companies. Due to the Company's limited history of grant activity, the expected life of options granted was estimated using the "simplified method" in accordance with Staff Accounting Bulletin 110, where the expected life equals the arithmetic average of the vesting term and the original contractual term of the options. No dividends are expected to be paid. Forfeitures have been estimated by the Company based upon historical and expected forfeiture experience. Expected forfeiture rates used for the periods presented were 0% to 5%.

Stock-based compensation included in the Company's consolidated statements of operations is as follows:


	Year Ended December 31,						From Inception To December 31,
	2011		2010		2009		2011
Stock options issued to non-employees:
Research and development	$	155,000	$	142,000	$	31,000	$	336,000
Selling, general and administrative		—		106,000		47,000		164,000
Stock options issued to employees and board members:
Research and development		593,000		470,000		173,000		1,310,000
Selling, general and administrative		1,839,000		1,872,000		624,000		4,446,000
Restricted stock issued to non-employees:
Research and development		85,000		70,000		70,000		285,000
Restricted stock issued to employees and board members:
Research and development		189,000		—		—		189,000
Selling, general and administrative		423,000		—		—		423,000
Employee stock purchase plan:
Research and development		23,000		—		—		23,000
Selling, general and administrative		31,000		—		—		31,000
Warrant issued to CDP:
Selling, general and administrative		3,488,000		7,851,000		—		11,339,000

Non-cash stock-based compensation	$	6,826,000	$	10,511,000	$	945,000	$	18,546,000
Purchase of class B interests of Gevo Development from CDP for cash:
Selling, general and administrative		296,000		774,000		—		1,070,000
Modified stock option awards (1):
Selling, general and administrative		610,000		—		—		610,000

Cash settled stock-based compensation	$	906,000	$	774,000	$	—	$	1,680,000

Total stock-based compensation	$	7,732,000	$	11,285,000	$	945,000	$	20,226,000

(1)

On December 21, 2011, the Company amended the existing employment agreements with the Company's Chief Executive Officer ("CEO"), as a retention incentive to the CEO, and to enhance the alignment of his interests with those of the Company's stockholders. Upon the effectiveness of the amendment agreement, all options to purchase common stock of the Company that had been granted to the CEO in fiscal years 2008, 2009 and 2010 immediately became unvested (to the extent previously vested) and subject to a revised three-year vesting schedule. Pursuant to the amendment agreement, an aggregate of 624,505 options that were previously vested and exercisable (or approximately 64% of the vested options held by the CEO) became unvested. The CEO is also no longer entitled to the guaranteed portion of his annual equity award, worth $600,000 per year. In exchange for these concessions, the CEO is entitled to receive a cash award of $1,500,000, which is payable in three installments through June 30, 2012, of which $500,000 was paid prior to December 31, 2011. The incremental fair value of the stock option awards subject to modified vesting was calculated as $43,000 which will be amortized to stock-based compensation over the three-year service period from the date of the amendment agreement. During the year ended December 31, 2011, the Company recorded stock-based compensation expense of $610,000 associated with the $1,500,000 cash award.

Restricted Stock— The Company periodically grants restricted stock awards to employees (including board members) and non-employee consultants. The vesting period for restricted stock awards granted may be based upon a service period or based upon the attainment of performance objectives. The Company recognizes stock-based compensation over the vesting period, generally three to six years, for awards that vest based upon a service period. For performance based restricted stock awards, the Company recognizes expense over the requisite service period. During December 2011, the Company awarded 199,539 shares of restricted common stock to employees with a vesting schedule based on the attainment of performance objectives related to the start-up of isobutanol production at the Agri-Energy Facility. For these awards, the grant-date fair value is being amortized to expense over the requisite service period which is estimated to be through June 30, 2012. If the performance objectives are not achieved, the awards will be forfeited and cancelled and any previously recognized stock-based compensation expense will be reversed as expense is only recorded for awards that ultimately vest. Stock-based awards granted to non-employees are periodically revalued as services are performed and the awards vest.

Activity and related information for the Company's restricted common stock awards is summarized as follows:


	Number of Shares			Weighted- Average Grant-Date Fair Value
Nonvested—December 31, 2008		86,971		$	0.42
Granted		—			—
Vested		(37,634	)		(0.41	)
Canceled or forfeited		(13,530	)		(0.35	)

Nonvested—December 31, 2009		35,807		$	0.45

Granted		—			—
Vested		(7,812	)		(0.49	)
Canceled or forfeited		(22,266	)		(0.43	)

Nonvested—December 31, 2010		5,729		$	0.49

Granted		318,791			10.28
Vested		(32,763	)		14.39
Canceled or forfeited		(6,932	)		17.53

Nonvested—December 31, 2011		284,825		$	9.44

As of December 31, 2011, the total unrecognized compensation expense, net of estimated forfeitures, relating to restricted stock awards was $2,544,000, which is expected to be recognized over a weighted-average period of 1.03 years.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph 64, 65, A240
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 93-6
-Paragraph 53
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 50
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929

+ Details

Income Taxes

12 Months Ended

Dec. 31, 2011

Income Taxes [Abstract]

Income Taxes

14. Income Taxes

There is no provision for income taxes because the Company has incurred operating losses since Inception. As of December 31, 2011, the Company had federal and state net operating loss carryforwards of approximately $104,000,000 which may be used to offset future taxable income. The Company also had federal research and development tax credit carryforwards and other federal tax credit carryforwards which aggregate to $4,000,000. These carryforwards expire at various times through 2031 and may be limited in their annual usage by Section 382 of the Internal Revenue Code, as amended, relating to ownership changes.

The tax effects of temporary differences that give rise to significant portions of the Company's net deferred tax assets at December 31, 2011 and 2010, are as follows:


	December 31,
	2011			2010
Deferred tax assets:
Net operating loss carryforwards	$	41,200,000		$	25,400,000
Research and other credits		4,000,000			1,700,000
Other temporary differences		8,000,000			4,700,000

Net deferred tax assets—before valuation allowance		53,200,000			31,800,000
Valuation allowance		(53,200,000	)		(31,800,000	)

Net deferred tax assets—after valuation allowance	$	—		$	—

As a result of certain realization requirements of FASB ASC 718, the table of net deferred tax assets shown above does not include certain deferred tax assets as of December 31, 2011 that arose directly from tax deductions related to equity compensation in excess of compensation recognized for financial reporting. Equity will be increased by $550,000 if and when the deferred tax assets are ultimately realized. The Company uses tax law ordering for purposes of determining when excess tax benefits have been realized.

The Company's deferred tax assets represent an unrecognized future tax benefit. The Company has provided a full valuation allowance on its deferred tax asset at December 31, 2011, as management believes it is more likely than not that the related deferred tax asset will not be realized. The reported amount of income tax expense differs from the amount that would result from applying domestic federal statutory tax rates to pretax losses, primarily because of changes in the valuation allowance. Reconciling items from income tax computed at the statutory federal rate for the years ended December 31, 2011, 2010 and 2009, were as follows:


	2011			2010			2009
Federal income tax at statutory rate		35.0	%		35.0	%		35.0	%
State income taxes, net of federal benefits		5.7	%		3.4	%		3.0	%
Research and other credits		4.7	%		2.4	%		1.3	%
Permanent adjustments		(1.8	%)		(2.6	%)		(1.4	%)
Valuation allowance		(43.6	%)		(38.2	%)		(37.7	%)
Other		(0.0	%)		(0.0	%)		(0.2	%)

Effective tax rate		0.0	%		0.0	%		0.0	%

The Company accounts for uncertain tax positions under FASB ASC 740, Income Taxes. The Company has concluded that there are no significant uncertain tax positions requiring recognition in the consolidated financial statements. The Company's evaluation was performed for the tax periods from Inception to December 31, 2011, which remain subject to examination by major tax jurisdictions as of December 31, 2011.

The Company may from time to time be assessed interest or penalties by major tax jurisdictions, although there have been no such assessments historically, with material impact to its financial results. In the event it receives an assessment for interest and/or penalties, such an assessment would be classified in the consolidated statements of operations as income tax expense.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 136, 172
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 43, 44, 45, 46, 47, 48, 49
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319

+ Details

Employee Benefit Plan	12 Months Ended
Employee Benefit Plan	Dec. 31, 2011
Employee Benefit Plan [Abstract]
Employee Benefit Plan	15. Employee Benefit Plan The Company's employees participate in the Gevo, Inc. 401(k) Plan (the "401(k) Plan"). Subject to certain eligibility requirements, the 401(k) Plan covers substantially all employees after three months of service with quarterly entry dates. Employee contributions are deposited by the Company into the 401(k) Plan and may not exceed the maximum statutory contribution amount. The Company may make matching and/or discretionary contributions to the 401(k) Plan. Effective January 1, 2008, the Company began providing an employer match of 100% up to a maximum of 5% of compensation per employee, which vests over a period of approximately two years. During the years ended December 31, 2011, 2010 and 2009, and from Inception to December 31, 2011, the Company recorded $416,000, $263,000, $200,000 and $1,002,000, respectively, in matching contributions.

Related-Party Transactions	12 Months Ended
Related-Party Transactions	Dec. 31, 2011
Related-Party Transactions [Abstract]
Related-Party Transactions	16. Related-Party Transactions A founder, consultant and former director of the Company, who owns common stock of the Company and is a holder of Company stock options, is a professor at the California Institute of Technology, which is a party to license agreement and research agreements with the Company. The co-managing directors of Gevo Development beneficially own 100% of the equity interests of CDP. CDP holds a warrant for common stock of Gevo, Inc. (Note 6). The co-managing directors also entered into employment agreements with Gevo, Inc., which became effective on September 22, 2010.

- Definition

The entire disclosure for related party transactions, including the nature of the relationship(s), a description of the transactions, the amount of the transactions, the effects of any change in the method of establishing the terms of the transaction from the previous period, stated interest rate, expiration date, terms and manner of settlement per the agreement with the related party, and amounts due to or from related parties. If the entity and one or more other entities are under common ownership or management control and this control affects the operating results or financial position, disclosure includes the nature of the control relationship even if there are no transactions between the entities. Disclosure may also include the aggregate amount of current and deferred tax expense for each statement of earnings presented where the entity is a member of a group that files a consolidated tax return, the amount of any tax related balances due to or from affiliates as of the date of each statement of financial position presented, the principal provisions of the method by which the consolidated amount of current and deferred tax expense is allocated to the members of the group and the nature and effect of any changes in that method. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 4
-Section 08
-Paragraph k

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 3A
-Section 04
-Paragraph b

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 57
-Paragraph 1-4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864

Reference 5: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 6: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(k))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39691-107864

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39678-107864

+ Details

Commitments And Contingencies

12 Months Ended

Dec. 31, 2011

Commitments And Contingencies [Abstract]

Commitments And Contingencies

17. Commitments and Contingencies

Legal Matters—On January 14, 2011, Butamax Advanced Biofuels LLC ("Butamax"), a joint venture between BP Biofuels North America LLC and E. I. DuPont de Nemours and Co. ("DuPont"), filed a complaint (the "Complaint") in the United States District Court for the District of Delaware, as Case No. 1:11-cv-00054-UNA, alleging that the Company is infringing one or more claims made in U.S. Patent No. 7,851,188 (the "'188 Patent"), entitled "Fermentive Production of Four Carbon Alcohols." The '188 Patent, which has been assigned to Butamax, claims certain recombinant microbial host cells that produce isobutanol and methods for the production of isobutanol using such host cells. Butamax is seeking a declaratory judgment, injunctive relief, damages and costs, including attorney's fees and expenses. On March 25, 2011, the Company filed a response to the Complaint, denying Butamax's allegations of infringement and raising affirmative defenses.

On August 11, 2011, Butamax amended the Complaint to include allegations that the Company is infringing one or more claims made in U.S. Patent No. 7,993,889 (the "'889 Patent"), also entitled "Fermentive Production of Four Carbon Alcohols." The '889 Patent, which has been assigned to Butamax, claims methods for producing isobutanol using certain recombinant yeast microorganisms expressing an engineered isobutanol biosynthetic pathway. On September 22, 2011, Butamax filed a motion requesting a preliminary injunction with respect to the alleged infringement of the '899 Patent. The Company believes that the amended Complaint is without merit and will continue to aggressively defend its freedom to operate.

On September 13, 2011, the Company filed an answer to the amended Complaint in which the Company asserted counterclaims against Butamax and DuPont for infringement of U.S. Patent No. 8,017,375, entitled "Yeast Organism Producing Isobutanol at a High Yield" and U.S. Patent No. 8,017,376, entitled "Methods of Increasing Dihydroxy Acid Dehydratase Activity to Improve Production of Fuels, Chemicals, and Amino Acids," both of which were recently awarded to the Company by the United States Patent and Trademark Office. The counterclaim seeks a declaratory judgment, injunctive relief, damages and costs, including attorney's fees and expenses.

On January 24, 2012, the Company filed a complaint in the United States District Court for the District of Delaware, as Case No. 1:99-mc-09999, alleging that Butamax and DuPont are infringing one or more claims made in U.S. Patent No. 8,101,808 (the "'808 Patent") entitled "Recovery of Higher Alcohols from Dilute Aqueous Solutions." The '808 Patent claims methods to produce a C3-C6 alcohol—for example, isobutanol—through fermentation and to recover that alcohol from the fermentation medium. The Company is seeking a declaratory judgment, injunctive relief, damages and costs, including attorney's fees and expenses.

Due to the very early stage of this lawsuit, the Company has determined that the possible loss or range of loss related to this lawsuit cannot be reasonably estimated at this time.

Leases—In November 2007, the Company signed an operating lease for its office, research, and production facility in Englewood, Colorado (the "Colorado Facility") with a term expiring July 31, 2013. The Company also maintains a corporate apartment in Colorado, which has a lease term expiring during the next 12 months.

Rent expense for the years ended December 31, 2011, 2010 and 2009, and from Inception to December 31, 2011, was $552,000, $567,000, $514,000 and $2,673,000, respectively. The Company recognizes rent expense on its operating leases on a straight-line basis.

As of December 31, 2011, future minimum lease payments required under the Company's operating leases for the Colorado Facility and corporate apartment are as follows:


Years Ending December 31,
2012	$	505,000
2013		292,000
2014		—
2015		—
2016		—

	$	797,000

Guarantees and Indemnifications—In the ordinary course of its business, the Company makes certain indemnities, commitments, and guarantees under which it may be required to make payments in relation to certain transactions. The Company believes the fair value of these indemnification agreements is minimal and, as such, has not recorded any liability for these indemnities in the consolidated balance sheets.

The Company, as permitted under Delaware law and in accordance with its amended and restated certificate of incorporation and amended and restated bylaws, indemnifies its officers and directors for certain events or occurrences, subject to certain limits, while the officer or director is or was serving at the Company's request in such capacity. The duration of these indemnifications, commitments, and guarantees varies and, in certain cases, is indefinite. The maximum amount of potential future indemnification is unlimited; however, the Company has a director and officer insurance policy that may enable it to recover a portion of any future amounts paid. The Company accrues for losses for any known contingent liability, including those that may arise from indemnification provisions, when future payment is probable. No such losses have been recorded to date.

- Definition

The entire disclosure for commitments and contingencies.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 14
-Paragraph 3
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 9, 10, 11, 12
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.25)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14435-108349

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25287-109308

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6449706&loc=d3e16207-108621

+ Details

Segments

12 Months Ended

Dec. 31, 2011

Segments [Abstract]

Segments

18. Segments

Segment Information—The Company's chief operating decision maker is provided with and reviews the financial results of each of the Company's consolidated legal entities, Gevo, Inc., Gevo Development, LLC, and Agri-Energy, LLC. The Company organizes its business segments based on the nature of the products and services offered through each of our consolidated legal entities. All revenue is earned, and all assets are held, in the U.S. Prior to the acquisition of Agri-Energy, the financials of Gevo Development were aggregated with Gevo, Inc. due to its size compared to Gevo, Inc. and were not reported separately. For purposes of the table below, the Company has broken out the historical information of Gevo Development. The financial results of Gevo Development and Agri-Energy have been aggregated in the following table as this segment is currently responsible for the production of ethanol and related products and will be responsible for isobutanol and related products.


	Year Ended December 31, 2011			Year Ended December 31, 2010			Year Ended December 31, 2009
Revenues:
Gevo, Inc.	$	807,000		$	1,631,000		$	660,000
Gevo Development, LLC/Agri-Energy, LLC		63,742,000			14,765,000			—
Intercompany eliminations		—			—			—

	$	64,549,000		$	16,396,000		$	660,000

Operating income (loss):
Gevo, Inc.	$	(46,155,000	)	$	(33,809,000	)	$	(17,838,000	)
Gevo Development, LLC/Agri-Energy, LLC		1,462,000			(1,704,000	)		(731,000	)
Intercompany eliminations		—			—			—

	$	(44,693,000	)	$	(35,513,000	)	$	(18,569,000	)

Interest expense:
Gevo, Inc.	$	1,381,000		$	1,751,000		$	1,103,000
Gevo Development, LLC/Agri-Energy, LLC		2,196,000			623,000			—
Intercompany eliminations		—			—			—

	$	3,577,000		$	2,374,000		$	1,103,000

Depreciation and amortization expense:
Gevo, Inc.	$	2,539,000		$	2,639,000		$	1,511,000
Gevo Development, LLC/Agri-Energy, LLC		2,061,000			549,000			—
Intercompany eliminations		—			—			—

	$	4,600,000		$	3,188,000		$	1,511,000

Total assets:
Gevo, Inc.	$	104,843,000		$	34,259,000		$	26,307,000
Gevo Development, LLC/Agri-Energy, LLC		66,304,000			47,993,000			124,000
Intercompany eliminations		(38,117,000	)		(30,643,000	)		(48,000	)

	$	133,030,000		$	51,609,000		$	26,383,000

Acquisitions of plant, property and equipment:
Gevo, Inc.	$	1,397,000		$	806,000		$	2,982,000
Gevo Development, LLC/Agri-Energy, LLC(1)		6,618,000			—			—
Intercompany eliminations		—			—			—

	$	8,015,000		$	806,000		$	2,982,000

(1)	Excludes property, plant and equipment acquired in the Agri-Energy acquisition during the year ended December 31, 2010.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 131
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8981-108599

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 35
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8984-108599

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9054-108599

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
-Paragraph 40
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9031-108599

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8538-108599

Reference 8: http://www.xbrl.org/2003/role/presentationRef
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Topic 280
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 29
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8864-108599

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8971-108599

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 26
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8844-108599

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8380-108599

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8595-108599

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8933-108599

+ Details

Quarterly Information

12 Months Ended

Dec. 31, 2011

Quarterly Information [Abstract]

Quarterly Information

19. Quarterly Information (Unaudited)

The following information has been derived from unaudited consolidated financial statements that, in the opinion of management, include all recurring adjustments necessary for a fair statement of such information:


Year ended December 31, 2011	First Quarter			Second Quarter			Third Quarter			Fourth Quarter			Total
Revenues	$	15,281,000		$	14,533,000		$	17,506,000		$	17,229,000		$	64,549,000
Gross margin		88,000			896,000			1,274,000			1,703,000			3,961,000
Loss from operations		(8,412,000	)		(11,633,000	)		(11,524,000	)		(13,124,000	)		(44,693,000	)
Net loss		(9,283,000	)		(12,466,000	)		(12,305,000	)		(14,160,000	)		(48,214,000	)
Net loss attributable to Gevo, Inc. common stockholders		(10,377,000	)		(12,466,000	)		(12,305,000	)		(14,160,000	)		(49,308,000	)
Net loss per share	$	(0.76	)	$	(0.48	)	$	(0.48	)	$	(0.54	)	$	(2.15	)
Weighted average number of common shares outstanding—basic and diluted		13,744,337			25,852,185			25,870,060			26,005,744			22,909,916

Year ended December 31, 2010	First Quarter			Second Quarter			Third Quarter			Fourth Quarter			Total
Revenues	$	330,000		$	462,000		$	1,496,000		$	14,108,000		$	16,396,000
Gross margin		330,000			462,000			640,000			1,518,000			2,950,000
Loss from operations		(6,980,000	)		(7,619,000	)		(14,515,000	)		(6,399,000	)		(35,513,000	)
Net loss		(7,859,000	)		(8,601,000	)		(17,308,000	)		(6,344,000	)		(40,112,000	)
Net loss attributable to Gevo, Inc. common stockholders		(7,880,000	)		(9,380,000	)		(18,297,000	)		(7,333,000	)		(42,890,000	)
Net loss per share	$	(7.02	)	$	(8.15	)	$	(15.87	)	$	(6.35	)	$	(37.44	)
Weighted average number of common shares outstanding—basic and diluted		1,123,045			1,151,282			1,152,839			1,154,407			1,145,500

- Definition

The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.

+ References + Details

Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2011
Subsequent Events [Abstract]
Subsequent Events	20. Subsequent Events In January 2012, Agri-Energy borrowed an additional $5 million under the Amended Agri-Energy Loan Agreement. Concurrent with the borrowing, Gevo, Inc. issued warrants to purchase 31,407 shares of its common stock at a price per share of $7.96.

Label	Element	Value
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs	us-gaap_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	$ 56,000
Common Stock [Member]
Stock Issued During Period, Shares, New Issues	us-gaap_StockIssuedDuringPeriodSharesNewIssues	950,000
Stock Issued During Period, Value, New Issue	gevo_StockIssuedDuringPeriodValueNewIssue	$ 10,000
Retained Earnings [Member]
Net Income (Loss) Attributable to Parent	us-gaap_NetIncomeLoss	(259,000)
Additional Paid In Capital [Member]
Stock Issued During Period, Value, New Issue	gevo_StockIssuedDuringPeriodValueNewIssue	(10,000)
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs	us-gaap_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	56,000
Series A1 Preferred Stock [Member]
Issuance of Preferred Stock	gevo_IssuanceOfPreferredStock	500,000
Series A1 Preferred Stock [Member] \| Additional Paid In Capital [Member]
Issuance of Preferred Stock	gevo_IssuanceOfPreferredStock	490,000
Series A1 Preferred Stock [Member] \| Convertible Preferred Stock [Member]
Issuance of Preferred Stock	gevo_IssuanceOfPreferredStock	$ 10,000
Issuance of Preferred Stock, Shares	gevo_IssuanceOfPreferredStockShares	1,000,000