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Document and Entity Information	9 Months Ended
Document and Entity Information	Sep. 30, 2012 shares
Document and Entity Information [Abstract]
Entity Registrant Name	Gevo, Inc.
Entity Central Index Key	0001392380
Document Type	10-Q
Document Period End Date	Sep. 30, 2012
Amendment Flag	false
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding	39,408,052

Consolidated Balance Sheets (Unaudited) - USD ($)
$ in Thousands

Sep. 30, 2012

Dec. 31, 2011

Current assets:

Cash and cash equivalents

$ 91,997

$ 94,225

Accounts receivable

736

2,938

Inventories

3,798

3,814

Prepaid expenses and other current assets

1,229

1,283

Derivative assets

219

Margin deposit

277

474

Total current assets

98,256

102,734

Property, plant and equipment, net

76,836

28,777

Debt and equity offering costs, net

2,188

1,017

Deposits and other assets

1,370

502

Total assets

178,650

133,030

Current liabilities:

Accounts payable and accrued liabilities

12,647

12,440

Current portion of secured debt net of $902 and $969 discount at September 30, 2012 and December 31, 2011, respectively

8,952

3,491

Derivative liabilities

186

Total current liabilities

^[1]

21,599

16,117

Long-term portion of secured debt, net of $3241 and $1,504 discount at September 30, 2012 and December 31, 2011, respectively

17,910

24,752

Convertible Senior notes, net of $2568 discount

42,732

Other long-term liabilities

1,518

Total liabilities

83,759

40,893

Commitments and Contingencies

Stockholders' Equity

Preferred stock, $0.01 par value per share; 5,000,000 shares authorized; none issued and outstanding at September 30, 2012 and December 31, 2011

Common stock, $0.01 par value per share; 100,000,000 authorized; 39,408,052 and 26382058 shares issued and outstanding at September 30, 2012 and December 31, 2011, respectively

394

264

Additional paid-in capital

291,667

226,508

Deficit accumulated during development stage

(197,170)

(134,635)

Total stockholders' equity

$ 94,891

$ 92,137

[1]	Liabilities of Gevo, Inc.'s consolidated subsidiaries for which creditors do not have recourse to the general credit of Gevo, Inc. were $0.7 million and $4.5 million at September 30, 2012 and December 31, 2011, respectively, and are recorded within current liabilities.

Consolidated Balance Sheets (Parenthetical) (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2012	Dec. 31, 2011
Consolidated Balance Sheets [Abstract]
Current portion of secured debt, discount	$ 902	$ 969
Long-term portion secured debt, discount	3,241	$ 1,504
Discount on convertible debt	$ 2,568
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued
Preferred stock, shares outstanding
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock shares issued	39,408,052	26,382,058
Common stock, shares outstanding	39,408,052	26,382,058

Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		88 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012
Revenue and cost of goods sold
Ethanol sales and related products, net		$ 17,318	$ 19,908	$ 46,748	$ 98,415
Grant revenue and research and development program revenue	$ 562	188	2,553	572	6,096
Licensing revenue					138
Total revenues	562	17,506	22,461	47,320	104,649
Cost of goods sold	6,079	16,232	29,599	45,062	103,633
Gross (loss) margin	(5,517)	1,274	(7,138)	2,258	1,016
Operating expenses
Research and development	5,401	5,211	15,079	13,815	72,298
Selling, general and administrative	13,508	7,587	36,175	20,001	106,500
Other operating expenses				11	1,248
Total operating expenses	18,909	12,798	51,254	33,827	180,046
Loss from operations	(24,426)	(11,524)	(58,392)	(31,569)	(179,030)
Other (expense) income
Interest expense	(2,624)	(798)	(4,161)	(2,541)	(12,740)
Interest and other income	(1)	17	18	85	739
Change in fair value of warrant liabilities				(29)	(2,852)
Total other expense	(2,625)	(781)	(4,143)	(2,485)	(14,853)
Net loss	(27,051)	(12,305)	(62,535)	(34,054)	(193,883)
Deemed dividend-amortization of beneficial conversion feature on Series D-1 preferred stock				(1,094)	(3,872)
Net loss attributable to Gevo, Inc. common stockholders	$ (27,051)	$ (12,305)	$ (62,535)	$ (35,148)	$ (197,755)
Net loss per share attributable to Gevo, Inc. common stockholders - basic and diluted	$ (0.83)	$ (0.48)	$ (2.06)	$ (1.61)
Weighted-average number of common shares outstanding - basic and diluted	32,661,280	25,870,060	30,370,758	21,866,633

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended		88 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012
Operating Activities
Net loss	$ (62,535)	$ (34,054)	$ (193,883)
Adjustments to reconcile net loss to net cash used in operating activities:
Non-cash stock-based compensation	6,990	4,897	25,536
Depreciation and amortization	2,537	3,372	12,829
Non-cash interest expense	1,698	625	4,779
Loss (gain) from change in fair value of derivatives	(405)	(1,414)	(824)
Loss from change in fair value of warrant liabilities		29	2,852
Other non-cash expenses		11	364
Changes in operating assets and liabilities (net of effects of acquisitions):
Accounts receivable	2,202	81	1,263
Inventories	16	(1,209)	(228)
Prepaid expenses and other current assets	2	(535)	(646)
Margin deposit	197	624	615
Deposits and other assets	(117)		(207)
Accounts payable, accrued expenses, and long-term liabilities	2,103	1,813	10,870
Net cash used in operating activities	(47,312)	(25,760)	(136,680)
Investing Activities
Acquisitions of property, plant and equipment, net	(50,936)	(3,580)	(67,191)
Other	(647)		(700)
Acquisition of Agri-Energy, net of cash assumed			(24,936)
Restricted certificate of deposit	40	40	(39)
Net cash used in investing activities	(51,543)	(3,540)	(92,866)
Financing Activities
Proceeds from issuance of secured debt, net	4,947		40,061
Proceeds from issuance of convertible debt, net	40,922		40,922
Proceeds from issuance of common stock, net	57,442	113,012	167,850
Proceeds from issuance of common stock upon exercise of stock options and ESPP	737	21	977
Payments on secured debt	(7,267)	(1,402)	(15,557)
Deposit on long-term debt and other	(154)		(460)
Proceeds from issuance of convertible preferred stock			86,025
Proceeds from issuance of convertible promissory notes with warrants			3,000
Proceeds from the exercise of warrants			592
Payment of stock issuance costs			(1,867)
Net cash provided by financing activities	96,627	111,631	321,543
Net (decrease) increase in cash and cash equivalents	(2,228)	82,331	91,997
Cash and cash equivalents
Beginning of period	94,225	15,274
Ending of period	91,997	97,605	91,997
Supplemental disclosures of cash and non-cash investing and financing transactions
Non-cash purchase of property, plant & equipment	1,542	648	1,542
Cash paid for interest, net of amounts capitalized	1,629	1,766	6,780
Deferred debt and equity offering costs	6,164	4,296	10,460
Conversion of preferred stock warrants to common stock warrants upon initial public offering and reclassification related liability to additional paid-in-capital		2,063	2,063
Deemed dividend-amortization of beneficial conversion feature on Series D-1 convertible preferred stock		1,094	3,872
Fixed assets acquired using ICM, Inc. credit		$ 288	726
Promissory notes and accrued interest converted to Series C preferred stock			3,043
Issuance of Series C preferred stock upon exercise of warrant (amount reclassified from liability to equity)			14,580
Issuance of Series D-1 preferred stock to ICM in exchange for a credit against future services			1,000
Issued with Secured Long Term Debt
Supplemental disclosures of cash and non-cash investing and financing transactions
Warrants issued with secured long-term debt (grant date fair value)	$ 120		1,746
Issued with Convertible Promissory Notes
Supplemental disclosures of cash and non-cash investing and financing transactions
Warrants issued with secured long-term debt (grant date fair value)			$ 505

Nature of Business, Financial Condition and Basis of Presentation

9 Months Ended

Sep. 30, 2012

Nature of Business, Financial Condition and Basis of Presentation [Abstract]

Nature of Business, Financial Condition and Basis of Presentation

1. Nature of Business, Financial Condition and Basis of Presentation

Nature of Business—Gevo, Inc. (together with its subsidiaries, “Gevo” or 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, tolling arrangements or direct acquisition (see Note 9). Gevo Development became a wholly owned subsidiary of the Company on September 22, 2010. Gevo Development purchased Agri-Energy, LLC (“Agri-Energy”) on September 22, 2010. Through May 2012, Agri-Energy, a wholly owned subsidiary of Gevo Development, was engaged in the business of producing and selling ethanol and related products produced at its plant located in Luverne, Minnesota (the “Agri-Energy Facility”). The Company commenced the retrofit of the Agri-Energy Facility in 2011, and commenced initial start-up operations for the production of isobutanol at this facility in May 2012. The Company expects to conclude initial start-up operations in the second half of 2012. These initial start-up operations included production of initial quantities of isobutanol produced at commercial scale, completion of initial commissioning of new equipment and development of operating discipline at commercial scale. During the 2012 third quarter, the Company made the strategic decision to pause isobutanol production at the Agri-Energy Facility for a period of time during which it plans to produce ethanol at the Agri-Energy Facility, based on then current economic conditions for ethanol production while it focuses on optimizing specific parts of its technology to further enhance isobutanol production rates. The Company intends to resume isobutanol production at the Agri-Energy Facility in support of future commercial operations once this work has been completed.

At September 30, 2012, the Company is considered to be in the development stage as its primary activities, since Inception, have been conducting research and development, business development, business and financial planning, establishing its facilities including retrofitting the Agri-Energy Facility, initial start-up operations for isobutanol production at the Agri-Energy Facility, recruiting personnel and raising capital. 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, gaining market acceptance and demand for its products and services, and attracting and retaining qualified personnel.

Until May 24, 2012, when the Company commenced initial start-up operations for the production of isobutanol at the Agri-Energy Facility, the Company derived revenue from the sale of ethanol, distiller’s grains and other related products produced as part of the ethanol production process at this facility. Similarly, the Company expects to derive revenue from the sale of ethanol, and distiller’s grains during any period in which the Agri-Energy Facility is temporarily reverted to ethanol production, including the current planned reversion during which the Company will focus on optimizing specific parts of its technology to further enhance isobutanol production rates. However, the production of ethanol is not the Company’s intended business and its future profitability depends on its ability to produce and market isobutanol, not on continued production and sales of ethanol. The historical operating results of Agri-Energy and the operating results reported during the retrofit to isobutanol production, the initial start-up of isobutanol production and any period when the Company may temporarily revert to ethanol production will not be indicative of future operating results for Agri-Energy or Gevo once full-scale commercial isobutanol production commences at this facility. Additionally, 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 significant revenue from the sale of isobutanol or other products that are or become the Company’s intended business.

Financial Condition—The Company’s unaudited 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 three and nine months ended September 30, 2012, the Company incurred a consolidated net loss of $12.1 million and $47.5 million, respectively and had an accumulated deficit of $182.2 million at September 30, 2012. 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 private placements of convertible preferred stock, the issuance of convertible and nonconvertible debt and proceeds raised through its public offerings. The Company expects to obtain funding through additional equity offerings and issuances of debt until it achieves positive cash flow from operations. The Company’s cash and cash equivalents at September 30, 2012 totaled $92.0 million. Management expects that cash on hand at September 30, 2012, will provide the Company with adequate funding for at least the next 12 months. 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 unaudited consolidated financial statements do not include any adjustments that may result from the Company’s inability to raise sufficient funds or achieve profitability.

Basis of Presentation—The unaudited consolidated financial statements of the Company (which includes the accounts of its wholly-owned subsidiaries Gevo Development and Agri-Energy) have been prepared, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). Accordingly, they do not include all information and footnotes required by accounting principles generally accepted in the United States of America for complete financial statements. These statements reflect all normal and recurring adjustments which, in the opinion of management, are necessary to present fairly the financial position, results of operations and cash flows of the Company at September 30, 2012 and for all periods presented. These statements should be read in conjunction with the Company’s consolidated financial statements and notes thereto included under the heading “Financial Statements and Supplementary Data” in Part II, Item 8 of the Company’s Annual Report on Form 10-K for the year ended December 31, 2011, as amended (the “Annual Report”).

The consolidated statements of operations for the three and nine months ended September 30, 2012 and consolidated statements of cash flows for the nine months ended September 30, 2012 are not necessarily indicative of the results to be expected for the full year. Refer to the economic conditions described under the heading “Risk Factors” in Part II, Item 1A of this Quarterly Report on Form 10-Q.

Certain prior year balances have been reclassified to conform to the current year’s presentation.

Earnings Per Share

9 Months Ended

Sep. 30, 2012

Earnings Per Share [Abstract]

Earnings Per Share

2. Earnings 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 table below sets forth potentially dilutive securities that are excluded from the calculation of diluted net loss per share during each period as the effect was anti-dilutive.


	Three Months Ended September 30,				Nine Months Ended September 30,
	2012		2011		2012		2011
Convertible debt		7,905,000		—		7,905,000		—
Outstanding options to purchase common stock		1,093,026		2,144,815		1,517,605		2,284,221
Warrants to purchase common stock		1,229,998		1,086,785		1,229,998		1,086,785
Unvested restricted common stock		—		—		34,277		50,173

Total		10,228,024		3,231,600		10,686,880		3,421,179

Inventories

9 Months Ended

Sep. 30, 2012

Inventory Disclosure [Abstract]

Inventories

3. Inventories

The following table sets forth the components of the Company’s inventory balances (in thousands).


	September 30, 2012		December 31, 2011
Raw materials
Corn	$	1,729	$	2,408
Enzymes and other inputs		747		151
Finished goods
Ethanol		—		349
Distiller’s grains		—		17
Work in process		420		456
Spare parts		902		433

Total inventories	$	3,798	$	3,814

Included in cost of goods sold is depreciation of $0.5 million and $1.6 million during the three and nine months ended September 30, 2012, respectively, and $0.5 million and $1.5 million during the three and nine months ended September 30, 2011, respectively. Depreciation expense included in cost of goods sold from Inception to September 30, 2012 was $4.2 million.

Property, Plant and Equipment

9 Months Ended

Sep. 30, 2012

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

4. Property, Plant and Equipment

The following table sets forth the Company’s property, plant and equipment by classification (in thousands).


		September 30, 2012			December 31, 2011
Construction in progress	—	$	56,457		$	8,403
Plant machinery and equipment	10 years		10,960			10,822
Site improvements	10 years		7,007			6,994
Lab equipment, furniture and fixtures and vehicles	5 years		5,346			4,035
Demonstration plant	2 years		3,597			3,597
Buildings	10 years		2,543			2,543
Computer, office equipment and software	3 years		1,393			614
Leasehold improvements, pilot plant, land and support equipment	0 -5 years		2,058			1,759

Total property, plant and equipment			89,361			38,767
Less accumulated depreciation and amortization			(12,525	)		(9,990	)

Property, plant and equipment, net		$	76,836		$	28,777

The Company’s construction in progress of $55.6 million is associated with the retrofit of the Agri-Energy Facility. These costs include a number of capital costs that are unique to the design of the Agri-Energy Facility, including equipment necessary to switch between ethanol and isobutanol production, functionality to increase the potential production capacity of GIFT^® at the Agri-Energy Facility and the establishment of an enhanced yeast seed train to accelerate the adoption of improved yeast at the Agri-Energy Facility and at future plants. Total capital expenditures at the Agri-Energy Facility also include upfront design and engineering costs, plant modifications identified as necessary during initial start-up operations for the production of isobutanol as well as sales tax on equipment and capitalized interest. The Company incurred approximately $21.2 million associated with design features for expanded capacity including the enhanced yeast seed train plus approximately $3.8 million for sales tax and capitalized interest.

The Company capitalized interest incurred in connection with the retrofit of the Agri-Energy Facility during the period of construction through the date it became substantially complete, June 30, 2012. The Company capitalized $1.3 million of incurred interest during 2012.

- 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

Derivative Instruments

9 Months Ended

Sep. 30, 2012

Derivative Instruments [Abstract]

Derivative Instruments

5. Derivative Instruments

Forward Purchase and Exchange-Traded Futures Contracts

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 during the year ended December 31, 2011 the Company designated all of its forward purchase contracts for corn under the normal purchase and normal sales scope exception and therefore they were not marked to market during the three and nine months ended September 30, 2011. For new contracts entered into beginning January 1, 2012, the Company did not apply the normal purchase and normal sales scope exception to its forward purchase contracts. Accordingly at September 30, 2012, the Company recorded these contracts at their fair market value which has been included as a component of derivative asset or liability in the consolidated balance sheet. Changes in the fair market value of these contracts during the three and nine months ended September 30, 2012 have been recorded in cost of goods sold in the consolidated statements of operations.

The Company generally follows a policy of using exchange-traded futures contracts to reduce its net position in agricultural commodity inventories and forward purchase contracts to reduce price risk. Exchange-traded futures contracts are valued at market price and are recorded as a derivative asset or liability 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 September 30, 2012 and December 31, 2011, the Company had $0.3 million and $0.5 million, respectively, in a margin deposit account for its exchange-traded futures contracts. The Company has not designated any of its derivatives as hedges for financial accounting purposes.

The Company records realized gains or losses on its exchange traded futures contracts as a component of cost of goods of sold. The Company incurred realized losses on its exchange-traded futures contracts of $1.2 million and $0.9 million during the three and nine months ended September 30, 2012, respectively. The Company incurred realized losses on its exchange-traded futures contracts of $0.3 million, $0.8 million and $1.4 million during the three and nine months ended September 30, 2011 and from Inception to September 30, 2012, respectively.

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 (in thousands).


	Three Months Ended September 30,				Nine Months Ended September 30,					Inception to September 30, 2012
	2012		2011		2012		2011			Inception to September 30, 2012
Exchange-traded futures contracts	$	638	$	1,020	$	404	$	1,775		$	866
Forward purchase contracts	$	2	$	—	$	—	$	(361	)		43

The following table represents the Company’s net short positions of the Company’s derivative instruments (in thousands).


Year of Expiration	September 30, 2012 Corn Net Short Position Bushels		December 31, 2011 Corn Net Short Position Bushels
2012		81		77

Convertible Notes

In July 2012, the Company issued 7.5% convertible senior notes due 2022 (the “Convertible Notes”) which contain the following embedded derivatives: (i) rights to convert into shares of the Company’s common stock, including upon a Fundamental Change (as defined in the indenture governing the Convertible Notes (the “Indenture”)); and (ii) a Coupon Make-Whole Payment (as defined in the Indenture) in the event of a conversion by the holders of the Convertible Notes on or after January 1, 2013 but prior to July 1, 2017. In accordance with generally accepted accounting principles in the U.S., embedded derivatives are separated from the host contract, the Convertible Notes, and carried at fair value when: (a) the embedded derivative possesses economic characteristics that are not clearly and closely related to the economic characteristics of the host contract; and (b) a separate, stand-alone instrument with the same terms would qualify as a derivative instrument. The Company has concluded that the embedded derivatives within the Convertible Notes meet these criteria and, as such, must be valued separate and apart from the Convertible Notes and recorded at fair value each reporting period.

The Company combines these embedded derivatives and values them together as one unit of accounting. At each reporting period, the Company records this embedded derivative at fair value which is included as a component of convertible notes on the consolidated balance sheets.

The Company used a binomial lattice model in order to estimate the fair value of the embedded derivative in the Convertible Notes. A binomial lattice model generates two probable outcomes—one up and another down—arising at each point in time, starting from the date of valuation until the maturity date. A lattice was initially used to determine if the Convertible Notes would be converted, called or held at each decision point. Within the lattice model, the following assumptions are made: (i) the Convertible Notes will be converted early if the conversion value is greater than the holding value; or (ii) the Convertible Notes will be called if the holding value is greater than both (a) the Redemption Price (as defined in the Indenture), and (b) the conversion value plus the Coupon Make-Whole Payment at the time. If the Convertible Notes are called, then the holders will maximize their value by finding the optimal decision between (1) redeeming at the Redemption Price or (2) converting the Convertible Notes.

Using this lattice, the Company valued the embedded derivative using a “with-and-without method,” where the value of the Convertible Notes including the embedded derivative, is defined as the “with”, and the value of the Convertible Notes excluding the embedded derivative, is defined as the “without”. This method estimates the value of the embedded derivative by looking at the difference in the values between the Convertible Notes with the embedded derivative and the value of the Convertible Notes without the embedded derivative. The lattice model requires the following inputs: (i) price of Gevo common stock; (ii) Conversion Rate (as defined in the Indenture); (iii) Conversion Price (as defined in the Indenture); (iv) maturity date; (v) risk-free interest rate; (vi) estimated stock volatility; and (vii) estimated credit spread for the Company.

The following table sets forth the inputs (Level 2 as defined in Note 14) to the lattice model that were used to value the embedded derivative.


	Issuance Date			September 30, 2012
Stock price	$	4.95		$	2.14
Conversion Rate		175.6697			175.6697
Conversion Price	$	5.69		$	5.69
Maturity date		July 1, 2022			July 1, 2022
Risk-free interest rate		1.62	%		1.65	%
Estimated stock volatility		72	%		80	%
Estimated credit spread		30	%		33	%

Changes in certain inputs into the lattice model can have a significant impact on changes in the estimated fair value of the embedded derivative. The following table sets forth the value of the Convertible Notes with and without the embedded derivative, and the fair value of the embedded derivative as of the issuance date and September 30, 2012 (in thousands).


	Issuance Date		September 30, 2012
Fair value of Convertible Notes:
With the embedded derivative	$	45,000	$	30,000
Without the embedded derivative		17,000		17,000

Estimated fair value of the embedded derivative	$	28,000	$	13,000

The $15.0 million decrease in the estimated fair value of the embedded derivative between the issue date and September 30, 2012 represents an unrealized gain which has been recorded as gain from change in fair value of embedded derivative in the consolidated statement of operations.

- 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 Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6441202&loc=d3e80720-113993

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41620-113959

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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+ Details

Accounts Payable and Accrued Liabilities

9 Months Ended

Sep. 30, 2012

Accounts Payable and Accrued Liabilities, Current [Abstract]

Accounts Payable and Accrued Liabilities

6. Accounts Payable and Accrued Liabilities

The following table sets forth the components of the Company’s accounts payable and accrued liabilities in the consolidated balance sheets at September 30, 2012 and December 31, 2011 (in thousands).


	September 30, 2012		December 31, 2011
Accrued legal-related expenses	$	5,152	$	1,455
Accrued employee compensation		2,285		941
Accounts payable — trade		1,607		6,193
Accrued expenses — ICM, Inc.		729		1,634
Cargill license agreement		259		924
Other accrued liabilities		2,615		1,293

Total accounts payable and accrued liabilities	$	12,647	$	12,440

Secured Debt and Convertible Senior Notes

9 Months Ended

Sep. 30, 2012

Secured Debt and Convertible Senior Notes [Abstract]

Secured Debt and Convertible Senior Notes

7. Secured Debt and Convertible Notes

The following table sets forth information pertaining to the Company’s secured debt issued to Lighthouse Capital Partners V, LP (“Lighthouse”) and TriplePoint Capital LLC (“TriplePoint”) and the Convertible Notes, each of which is included in the Company’s consolidated balance sheets (in thousands).


	September 30, 2012			December 31, 2011
Secured debt
Lighthouse—Paid in full at June 2012	$	—		$	1,241
TriplePoint—Paid in full at July 2013		—			5,400
TriplePoint—Matures September 2014		13,500			13,500
TriplePoint—Matures October 2015		10,146			10,575
TriplePoint—Matures January 2016		5,091			—

Total secured debt		28,737			30,716
Convertible senior notes		45,000			—

Total debt		73,737			30,716
Less:
Change in fair value of embedded derivative		(15,000	)		—
Unamortized debt discounts		(4,431	)		(2,473	)

		54,306			28,243
Less current portion of debt		(8,952	)		(3,491	)

Long-term portion of debt	$	45,354		$	24,752

Lighthouse

On December 18, 2006, the Company entered into a loan and security agreement, as amended, with Lighthouse. As of September 30, 2012, the Company had repaid all outstanding amounts under its loan and security agreement with Lighthouse.

TriplePoint

In January 2012, the Company’s wholly owned subsidiary, Agri-Energy, borrowed $5.0 million under the amended and restated loan and security agreement, dated October 20, 2011 (the “Amended Agri-Energy Loan Agreement”), by and between Agri-Energy and TriplePoint. The loan, which matures in January 2016, bears an interest rate of 11%. The Amended Agri-Energy Loan Agreement includes customary affirmative and negative covenants for agreements of this type and events of default. At September 30, 2012, the Company was in compliance with the financial covenants under the Amended Agri-Energy Loan Agreement.

In June 2012, the Company entered into (i) an amendment (the “Security Agreement Amendment”) to the security agreement, by and between the Company and TriplePoint, dated as of September 22, 2010 (the “Security Agreement”), which secures the Company’s guarantee of Agri-Energy’s obligations under the Amended Agri-Energy Loan Agreement, and (ii) an amendment (the “Gevo Loan Amendment”) to the loan and security agreement, dated August 5, 2010, by and between Company and TriplePoint (the “Gevo Loan Agreement”). In addition, concurrently with the execution of the Security Agreement Amendment and the Gevo Loan Amendment, Agri-Energy entered into an amendment to the Amended Agri-Energy Loan Agreement. These amendments took effect upon the closing of the Convertible Notes offering on July 5, 2012.

These amendments, among other things: (i) permitted the issuance of the Company’s Convertible Notes; (ii) removed Agri-Energy’s and the Company’s options to elect additional interest-only periods upon the achievement of certain milestones; (iii) permit Agri-Energy to make dividend payments and distributions to the Company for certain defined purposes related to the Convertible Notes; (iv) add as an event of default the payment, repurchase or redemption of the Convertible Notes or of amounts payable in connection therewith other than certain permitted payments related to the Convertible Notes; (v) add a negative covenant whereby the Company may not incur any indebtedness other than as permitted under the Security Agreement; and (vi) add a prohibition on making any coupon make-whole payments in cash prior to the payment in full of all remaining outstanding obligations in full under the Amended Agri-Energy Loan Agreement.

In July 2012, upon issuance of the Convertible Notes, the Company used $5.4 million of the proceeds to pay in full all amounts outstanding under the Gevo Loan Agreement.

Convertible Notes

In July 2012, the Company sold $45.0 million in aggregate principal amount of Convertible Notes, with net proceeds of $40.9 million, after accounting for $2.7 million and $1.4 million of discounts and issue costs, respectively. The Convertible Notes bear interest at 7.5% which is to be paid semi-annually in arrears on January 1 and July 1 of each year commencing on January 1, 2013. The Convertible Notes will mature on July 1, 2022, unless earlier repurchased, redeemed or converted. During the three months ended September 30, 2012, the Company recorded $0.2 million of expense related to the amortization of debt discounts and issue costs and recorded $0.8 million of interest expense. The amortization of interest expense, issue costs and debt discounts are included as a component of interest expense in the consolidated statements of operations.

The Convertible Notes are convertible at an initial Conversion Rate of 175.6697 shares of the Company’s common stock per $1,000 principal amount of Convertible Notes, subject to adjustment in certain circumstances as described in the Indenture. This is equivalent to an initial Conversion Price of approximately $5.69 per share of common stock. Holders may convert the Convertible Notes at any time prior to the close of business on the third business day immediately preceding the maturity date of July 1, 2022.

If a holder elects to convert its Convertible Notes after January 1, 2013 but prior to July 1, 2017, such holder shall be entitled to receive, in addition to the consideration upon conversion, a Coupon Make-Whole Payment. The Coupon Make-Whole Payment is equal to the sum of the present values of the lesser of: (a) eight semi-annual interest payments; or (b) the number of semi-annual interest payments that would have been payable on the Convertible Notes that a holder has elected to convert from the last day through which interest was paid, or the issue date if no interest has been paid, to but excluding July 1, 2017, computed using a discount rate of 2%. The Company may pay any Coupon Make-Whole Payment either in cash or in shares of Gevo common stock at its election. If the Company elects to pay in common stock, the stock will be valued at 90% of the average of the daily volume weighted average prices of the Company’s common stock for the 10 trading days preceding the date of conversion.

If a Make-Whole Fundamental Change (as defined in the Indenture) occurs and a holder elects to convert its Convertible Notes prior to July 1, 2017, the Conversion Rate will increase based upon reference to the table set forth in Schedule A of the Indenture. In no event will the Conversion Rate increase to more than 202.0202 per $1,000 principal amount of Convertible Notes.

If a Fundamental Change (as defined in the Indenture) occurs, at any time, then each holder will have the right to require the Company to repurchase all of such holder’s Convertible Notes, or any portion thereof that is an integral multiple of $1,000 principal amount, for cash at a repurchase price of 100% of the principal amount of such Convertible Notes plus any accrued and unpaid interest through the repurchase date. Additionally, on July 1, 2017, each holder will have the right to require the Company to repurchase all of such holder’s Convertible Notes, or any portion thereof that is an integral multiple of $1,000 principal amount, for cash at a repurchase price of 100% of the principal amount of Convertible Notes plus any accrued and unpaid interest through the repurchase date.

The Company shall have a provisional redemption right (“Provisional Redemption”), at its option, to redeem, all or any part of the Convertible Notes at a price payable in cash, beginning on July 1, 2015 and prior to July 1, 2017, provided that the Company’s common stock for 20 or more trading days in a period of 30 consecutive trading days ending on the trading day immediately prior to the redemption notice exceeds 150% of the Conversion Price in effect on such trading day. On or after July 1, 2017, the Company shall have an optional redemption right (“Optional Redemption”), at its option to redeem, all or any part of the Convertible Notes at a price payable in cash. The price payable in cash for the Optional Redemption or Provisional Redemption is equal to 100% of the principal amount of Convertible Notes plus any accrued and unpaid interest through the repurchase date.

If there is an Event of Default (as defined in the Indenture) under the Convertible Notes, the holders of not less than 25% in principal amount of Outstanding Notes (as defined in the Indenture) by notice to the Company and the trustee may, and the trustee at the request of such holders shall, declare the principal of all the Outstanding Notes and accrued and unpaid interest to be due and payable immediately.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References + Details

Significant Agreements

9 Months Ended

Sep. 30, 2012

Significant Agreements [Abstract]

Significant Agreements

8. 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 September 30, 2012.

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, (a) an exclusive first right to acquire its biobased isobutanol to produce isobutylene and butenes for use and sale in the field of chemicals, and (b) 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 amounts have been incurred under this agreement as of September 30, 2012.

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 September 30, 2012.

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 September 30, 2012 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. The Company did not have any amounts due from C&N as of September 30, 2012 as it did not produce and sell ethanol during the three months ended September 30, 2012. The Company had $1.7 million in receivables due from C&N as of December 31, 2011 associated with the sale of ethanol. The remaining receivable balance of $1.2 million at December 31, 2011 primarily relates to the sale of distiller’s grains to other customers.

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 $0.6 million. The term of the agreement is through December 30, 2012. Revenue is recognized upon shipment of product to the U.S. Air Force which is when transfer of risk of loss and title occurs. The Company recorded $0.5 million of revenue under this contract during the nine months ended September 30, 2012. In September 2012, the Company was awarded an additional contract for the procurement of up to 45,000 gallons of biojet fuel for delivery by October 31, 2013.

Commercialization and Development Agreements

Development and Commercialization Agreements with ICM, Inc.—In October 2008, the Company signed development and commercialization agreements with ICM, Inc. (“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. 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. The Company did not incur any capital expenditures with ICM relating to the demonstration plant during the three or nine months ended September 30, 2012. During the three and nine months ended September 30, 2011, the Company incurred $0.1 million and $0.7 million in capital expenditures with ICM relating to the demonstration plant.

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.

The Company incurred capital expenditures with ICM relating to the retrofit of the Agri-Energy Facility to isobutanol production of $6.7 million and $43.2 million during the three and nine months ended September 30, 2012, respectively, and $1.0 million and $2.0 million during the three and nine months ended September 30, 2011, 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 $0.3 million and $0.9 million of revenue under this agreement during the three and nine months ended September 30, 2012, respectively.

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 $4.3 million 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 $0.9 million, to research and development expense. During March 2010, the Company completed milestone number three and recorded the related milestone amount of $2.0 million to research and development expense at its then-current present value of $1.6 million because the milestone payment will be paid over a period greater than 12 months from the date that it was incurred. Milestones number four and five included in the license agreement representing potential payments of up to $1.5 million have not been met as of September 30, 2012 and no amounts have been recorded as a liability for these milestones.

Upon commercialization of a product which uses Cargill’s 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

In June 2011, the Company announced that it had successfully produced fully renewable and recyclable polyethylene terephthalate (“PET”) in cooperation with Toray Industries, Inc. (“Toray Industries”). Working directly with Toray Industries, the Company employed prototypes of commercial operations from the petrochemical and refining industries to make para-xylene (“PX”) from isobutanol. Toray Industries used the Company’s bio-PX and commercially available renewable mono ethylene glycol to produce fully renewable PET films and fibers. On June 1, 2012, the Company entered into a definitive agreement with Toray Industries for the joint development of an integrated supply chain for the production of bio-PET. Pursuant to the terms of the agreement with Toray Industries, the Company received $1.0 million which shall be used by the Company for the design, construction and/or operation of a pilot plant (the “Pilot Plant”). The Company anticipates producing bio-based PX (the “Product”) at the Pilot Plant, some of which will be sold to Toray Industries. Toray Industries is obligated to purchase initial volumes of Product. Any excess Product that is produced can be sold to other third parties. In the event that the Company is unable to produce and deliver a minimum amount of the Product to Toray Industries by December 31, 2013, the Company will be required to refund the $1.0 million by January 31, 2014. The Company has included the $1.0 million as a component of other long-term liabilities in its consolidated balance sheets as of September 30, 2012.

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

9 Months Ended

Sep. 30, 2012

Gevo Development [Abstract]

Gevo Development

9. Gevo Development

Gevo, Inc. formed Gevo Development on September 18, 2009 to finance and develop biorefineries through joint venture, tolling arrangements 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”), 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 $1.1 million.

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 $0.8 million, which reflected the amount paid during 2010 for the class B interests that were not dependent on counterparty performance. The Company recorded stock compensation of $0.1 million during the nine months ended September 30, 2012 and $0.1 million and $0.2 million for the three and nine months ended September 30, 2011. The final payment of $0.1 million made in January 2012 was dependent on the continued employment of the two co-managing directors of Gevo Development. The employment of the co-managing directors was terminated effective March 23, 2012 (for more information, see the description of the Amended and Restated Warrant Agreement below).

Gevo, Inc. made capital contributions to Gevo Development of $23.2 million and $43.8 million, respectively, during the three and nine months ended September 30, 2012 and $1.0 million and $3.8 million, respectively, during the three and nine months ended September 30, 2011. From Inception to September 30, 2012, Gevo, Inc. has made capital contributions of $68.1 million to Gevo Development.

The following table sets forth (in thousands) the net loss incurred by Gevo Development (including Agri-Energy after September 22, 2010, the closing date of the acquisition) 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).


	Three Months Ended September 30,					Nine Months Ended September 30,						Inception To September 30, 2012
	2012			2011		2012			2011			Inception To September 30, 2012
Gevo Development Net (Loss) Gain	$	(7,579	)	$	434	$	(12,684	)	$	(1,147	)	$	(16,433	)

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, Inc. 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.

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 were to vest over a two-year period beginning on September 22, 2010, subject to acceleration and termination in certain circumstances. The Company valued the warrant at $14.0 million. Effective March 23, 2012, the employment of the beneficial owners of CDP was terminated. Pursuant to the terms of the warrant agreement, all unvested warrant shares became immediately vested and, as such, the Company recorded $2.6 million of stock-based compensation expense during the nine months ended September 30, 2012. During the three and nine months ended September 30, 2011, the Company recorded $0.9 million and $2.6 million, respectively, of stock-based compensation associated with this warrant agreement.

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 September 30, 2012 and December 31, 2011, Gevo Development does not have any assets that can be used only to settle obligations of Gevo Development. However, under the terms of the Amended Agri-Energy Loan Agreement with TriplePoint, as amended, subject to certain limited exceptions, Agri-Energy is only permitted to pay dividends if certain conditions are satisfied. As of September 30, 2012 and December 31, 2011, the creditors of Gevo Development have recourse to the general credit of Gevo, Inc. with the exception of $0.7 million and $4.5 million, 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.

Redfield Energy, LLC

9 Months Ended

Sep. 30, 2012

Redfield Energy, LLC [Abstract]

Redfield Energy, LLC

10. 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. 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 Redfield Facility once commercial production of isobutanol has begun. Additionally, Gevo, Inc. will license the technology necessary to produce isobutanol at the Redfield 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 undertaken the preliminary project engineering and permitting process for the Redfield retrofit. As of September 30, 2012, the Company has incurred $0.4 million in costs for the retrofit of the Redfield Facility which have been recorded on the Company’s consolidated balance sheets in deposits and other assets.

- Definition

The entire disclosure for equity method investments and joint ventures. Equity method investments are investments that give the investor the ability to exercise significant influence over the operating and financial policies of an investee. Joint ventures are entities owned and operated by a small group of businesses as a separate and specific business or project for the mutual benefit of the members of the group.

+ References + Details

Stock-Based Compensation

9 Months Ended

Sep. 30, 2012

Stock-Based Compensation [Abstract]

Stock-Based Compensation

11. Stock-Based Compensation

The Company records expense during the vesting period for share-based payment awards granted to employees and non-employees. The following table sets forth the Company’s stock-based compensation expense (in thousands).


	Three Months Ended September 30,				Nine Months Ended September 30,				From June 9, 2005 (Date of Inception) To September 30, 2012
	2012		2011		2012		2011
Stock options and ESPP shares issued
Research and development	$	273	$	199	$	663	$	591	$	2,332
Selling, general and administrative		634		567		2,077		1,288		6,718
Restricted stock issued
Research and development		343		52		317		139		791
Selling, general and administrative		280		125		1,317		263		1,740
Warrant issued to CDP
Selling, general and administrative		—		872		2,616		2,616		13,955

Non-cash stock-based compensation		1,530		1,815		6,990		4,897		25,536
Modified stock option awards
Selling, general and administrative		—		—		890		—		1,500
Purchase of Class B interests of Gevo Development from CDP for cash
Selling, general and administrative		—		74		74		222		1,144

Cash stock-based compensation		—		74		964		222		2,644

Total stock-based compensation	$	1,530	$	1,889	$	7,954	$	5,119	$	28,180

- 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

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-Name Staff Accounting Bulletin (SAB)
-Number Topic 14

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Reference 8: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Stockholders' Equity

9 Months Ended

Sep. 30, 2012

Stockholders' Equity [Abstract]

Stockholders' Equity

12. Stockholders’ Equity

In July 2012, the Company issued 12.5 million shares of its common stock at a price of $4.95 per share and received proceeds of $57.4 million net of $4.4 million in issue costs.

The Company currently grants share-based payment awards under the Gevo, Inc. 2010 Stock Incentive Plan (“2010 Plan”) which was approved by its stockholders in February 2011. The Company has reserved 2.6 million shares of common stock for issuance under the 2010 Plan and there were 1.3 million shares and 1.7 million shares available for grant as of September 30, 2012 and December 31, 2011, respectively.

- 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
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+ Details

Commitments and Contingencies

9 Months Ended

Sep. 30, 2012

Commitments and Contingencies [Abstract]

Commitments and Contingencies

13. 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-SLR, 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 “Amended Complaint”). 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. 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 September 22, 2011, Butamax filed a motion for preliminary injunction with respect to the alleged infringement by the Company of one or more claims made in the ’889 Patent.

On January 24, 2012, the Company filed a complaint in the United States District Court for the District of Delaware, as Case No. 1:12-cv-00070-SLR, 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.

On March 12, 2012, Butamax filed a complaint in the United States District Court for the District of Delaware, as Case No. 1:12-cv-00298-SLR, alleging that the Company is infringing one or more claims made in U.S. Patent No. 8,129,162, entitled “Ketol-Acid Reductoisomerase Using NADH.” This complaint is in addition to the Amended Complaint discussed above. Butamax is seeking a declaratory judgment, injunctive relief, damages, interest, costs and expenses, including attorney’s fees. The Company believes that it has meritorious defenses to these claims and intends to vigorously defend this lawsuit.

On March 13, 2012, the Company filed a complaint in the United States District Court for the District of Delaware, as Case No. 1:12-cv-00301-SLR, alleging that Butamax and DuPont are infringing U.S. Patent No. 8,133,715 (the “’715 Patent), entitled “Reduced By-Product Accumulation for Improved Production of Isobutanol.” The ’715 Patent claims recombinant microorganisms, including yeast, with modifications for the improved production of isobutanol. The Company is seeking a declaratory judgment, injunctive relief, damages and costs, including attorney’s fees and expenses.

On April 10, 2012, the Company filed a complaint (the “Gevo Complaint”) in the United States District Court for the District of Delaware, as Case No. 1:12-cv-00448-SLR, alleging that Butamax and DuPont are infringing one or more claims made in U.S. Patent No. 8,153,415 (the “’415 Patent”) entitled “Reduced By-Product Accumulation for Improved Production of Isobutanol.” The ‘415 Patent claims technology which eliminates two pathways that compete for isobutanol pathway intermediates in yeast. The Company is seeking a declaratory judgment, injunctive relief, damages and costs, including attorney’s fees and expenses.

On April 17, 2012, the Company amended the Gevo Complaint to include allegations that Butamax and DuPont are infringing one or more claims made in U.S. Patent No. 8,158,404 (the “’404 Patent”) entitled “Reduced By-Product Accumulation for Improved Production of Isobutanol.” The ’404 Patent claims the reduction or elimination of important enzymes in a pathway in isobutanol-producing yeast. The Company is seeking a declaratory judgment, injunctive relief, damages and costs, including attorney’s fees and expenses.

On May 15, 2012, Butamax filed a complaint in the United States District Court for the District of Delaware, as Case No. 1:12-cv-00602-SLR, alleging that the Company is infringing one or more claims made in U.S. Patent No. 8,178,328, entitled “Fermentive Production of Four Carbon Alcohols.” Butamax is seeking a declaratory judgment, injunctive relief, damages, interest, costs and expenses, including attorney’s fees. The Company believes that it has meritorious defenses to these claims and intends to vigorously defend this lawsuit.

On June 19, 2012, the United States District Court for the District of Delaware denied the motion for preliminary injunction which was filed by Butamax on September 22, 2011 with respect to the alleged infringement by the Company of one or more claims made in the ’889 Patent. As is normal and customary in patent infringement actions of this nature, Butamax then filed a notice of appeal. In connection with their appeal, Butamax has also filed a motion with the United States District Court for the District of Delaware seeking a temporary order to limit the Company’s activities with respect to the automotive fuel blending market while Butamax appeals the denial of its motion for preliminary injunction.

On July 6, 2012, the United States District Court for the District of Delaware issued a temporary order which stated, in part, that the Company could not deliver, provide, distribute, ship, release or transfer in any way bio-based isobutanol produced at the Agri-Energy Facility to any third party for any use or purpose related to the automotive fuel blending market while Butamax appeals the denial of its motion for preliminary injunction. The Company filed an appeal of the temporary order. Under the temporary order, the Company remained free to operate in markets such as chemicals, jet fuel, marine fuel and small engine fuel. On August 10, 2012, the Federal Circuit Court of Appeals granted Gevo’s motion to stay the status quo order entered on July 6, 2012 by the United States District Court for the District of Delaware.

On July 31, 2012, Gevo filed a complaint in the United States District Court for the Eastern District of Texas, as Case No. 2:12-cv-00417, alleging that Butamax, DuPont, BP p.l.c., and BP Biofuels North America LLC are infringing U.S. Patent No. 8,232,089 (the “’089 Patent), entitled “Cytosolic Isobutanol Pathway Localization for the Production of Isobutanol.” Gevo is seeking a declaratory judgment, injunctive relief, damages and costs, including attorney’s fees and expenses.

On July 31, 2012, Butamax and DuPont filed a lawsuit in the United States District Court for the District of Delaware for declaratory judgment against Gevo, as Case No. 1:12-cv-00999, seeking a judicial determination that the ’089 Patent is invalid and that Butamax and DuPont do not infringe it.

On August 6, 2012, Gevo filed a motion for preliminary injunction in Case No. 1:12-cv-00301-SLR in the United States District Court for the District of Delaware with respect to the alleged infringement by Butamax and DuPont of one or more claims made in the ’715 Patent.

On August 6, 2012, Butamax filed a complaint in the United States District Court for the District of Delaware, as Case No. 1:12-cv-01014, alleging that Gevo is infringing U.S. Patent No. 8,222,017, entitled “Ketol-Acid Reductoisomerase Using NADH.” Butamax is seeking a declaratory judgment, injunctive relief, damages and costs, including attorney’s fees and expenses.

On August 14, 2012, Gevo filed a lawsuit in the United States District Court for the Eastern District of Texas for declaratory judgment against Butamax, DuPont, BP p.l.c., BP Corporation North America Inc. and BP Biofuels North America LLC, as Case No. 2:12-cv-00435, seeking a judicial determination that a recently issued Butamax U.S. Patent No. 8,241,878 (the “’878 Patent”), entitled “Recombinant Yeast Host Cell with Fe-S Cluster Proteins and Methods of Using Thereof” is invalid and that Gevo does not infringe it.

On August 14, 2012, Butamax filed a complaint in the United States District Court for the District of Delaware, as Case No. 1:12-cv-01036, alleging that Gevo is infringing the ’878 Patent. Butamax is seeking a declaratory judgment, injunctive relief, damages and costs, including attorney’s fees and expenses.

On September 25, 2012, Gevo filed a complaint in the United States District Court for the District of Delaware, as Case No. 1:12-cv-01202, alleging that Butamax and DuPont are infringing U.S. Patent No. 8,273,565 (the “’565 Patent”), entitled “Methods of Increasing Dihydroxy Acid Dehydratase Activity to Improve Production of Fuels, Chemicals, and Amino Acids.” Gevo is seeking a declaratory judgment, injunctive relief, damages and costs, including attorney’s fees and expenses. On September 25, 2012, Butamax and DuPont filed a lawsuit in the United States District Court for the District of Delaware for declaratory judgment against Gevo, as Case No. 1:12-cv-01201, seeking a judicial determination that the ’565 Patent is invalid and that Butamax and DuPont do not infringe it.

On September 25, 2012, Butamax filed a complaint in the United States District Court for the District of Delaware, as Case No. 1:12-cv-01200, alleging that Gevo is infringing U.S. Patent No. 8,273,558, entitled “Fermentive Production of Four Carbon Alcohols.” Butamax is seeking a declaratory judgment, injunctive relief, damages and costs, including attorney’s fees and expenses.

On October 8, 2012, Butamax filed a complaint in the United States District Court for the District of Delaware, as Case No. 1:12-cv-01300, alleging that Gevo is infringing U.S. Patent No. 8,283,144, entitled “Fermentive Production of Four Carbon Alcohols.” Butamax is seeking a declaratory judgment, injunctive relief, damages and costs, including attorney’s fees and expenses.

On October 8, 2012, Butamax filed a lawsuit in the United States District Court for the District of Delaware for declaratory judgment against Gevo, as Case No. 1:12-cv-01301, seeking a judicial determination that Butamax is not infringing Gevo’s recently issued U.S. Patent No. 8,283,505, entitled “Recovery of Higher Alcohols from Dilute Aqueous Solutions.”

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

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

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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
-Number 5
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+ Details

Fair Value Measurements

9 Months Ended

Sep. 30, 2012

Fair Value Disclosures [Abstract]

Fair Value Measurements

14. Fair Value Measurements

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.

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.

The fair value of the Company’s forward contract derivative instruments are derived based upon a market approach using Level 2 inputs. The fair value of forward purchase contracts for corn was not material to the Company at September 30, 2012 and December 31, 2011. The fair value of exchange-traded derivative instruments was $0.2 million and $(0.2) million at September 30, 2012 and December 31, 2011, respectively, and is based on Level 1 inputs using quoted market prices.

The Company has estimated the fair value of its secured debt obligations based upon discounted cash flows with Level 3 inputs, such as the terms that 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. At December 31, 2011, the carrying values of the Company’s debt obligations approximated their estimated fair value. The Company’s estimate of the fair value of its secured debt obligations at September 30, 2012 are as follows (in thousands):


Issuance	Carrying Value		Fair Value
TriplePoint—Matures September 2014	$	12,965	$	12,137
TriplePoint—Matures October 2015		9,125		8,486
TriplePoint—Matures January 2016		4,772		4,206

In July 2012, the Company issued $42.3 million in Convertible Notes, net of $2.7 million in debt discounts. The Company has estimated the fair value of the Convertible Notes to be $30.0 million at September 30, 2012 based upon Level 2 inputs, including the market price of the Convertible Notes derived from actual trades of the Convertible Notes.

At September 30, 2012 and December 31, 2011, there were no transactions measured at fair value on a nonrecurring basis.

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.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References

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Reference 11: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Information on Business Segments

9 Months Ended

Sep. 30, 2012

Information on Business Segments [Abstract]

Information on Business Segments

15. Information on Business Segments

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, Gevo Development, and Agri-Energy. The Company organizes its business segments based on the nature of the products and services offered through each of the Company’s consolidated legal entities. All revenue is earned, and all assets are held, in the U.S.

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 the production of isobutanol and related products.


	Three Months Ended September 30,						Nine Months Ended September 30,
	2012			2011			2012			2011
Revenues:
Gevo	$	562		$	188		$	2,553		$	572
Gevo Development / Agri-Energy		—			17,318			19,908			46,748

Consolidated	$	562		$	17,506		$	22,461		$	47,320

Operating income (loss):
Gevo	$	(18,025	)	$	(12,406	)	$	(47,848	)	$	(31,850	)
Gevo Development / Agri-Energy		(6,401	)		882			(10,544	)		281

Consolidated	$	(24,426	)	$	(11,524	)	$	(58,392	)	$	(31,569	)

Interest expense:
Gevo	$	1,447		$	334		$	2,004		$	1,070
Gevo Development / Agri-Energy		1,177			464			2,157			1,471

Consolidated	$	2,624		$	798		$	4,161		$	2,541

Depreciation expense:
Gevo	$	367		$	679		$	956		$	1,829
Gevo Development / Agri-Energy		531			517			1,581			1,543

Consolidated	$	898		$	1,196		$	2,537		$	3,372

Acquisitons of plant, property and equipment:
Gevo	$	584		$	358		$	1,936		$	1,151
Gevo Development / Agri-Energy		15,850			967			49,000			2,429

Consolidated	$	16,434		$	1,325		$	50,936		$	3,580


	September 30, 2012			December 31, 2011
Total assets:
Gevo	$	149,009			104,843
Gevo Development / Agri-Energy		132,207			66,304
Intercompany eliminations		(102,854	)		(38,117	)

Consolidated	$	178,362		$	133,030

- 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

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+ Details

Nature of Business, Financial Condition and Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2012
Nature of Business, Financial Condition and Basis of Presentation [Abstract]
Nature of Business	Nature of Business—Gevo, Inc. (together with its subsidiaries, “Gevo” or 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, tolling arrangements or direct acquisition (see Note 9). Gevo Development became a wholly owned subsidiary of the Company on September 22, 2010. Gevo Development purchased Agri-Energy, LLC (“Agri-Energy”) on September 22, 2010. Through May 2012, Agri-Energy, a wholly owned subsidiary of Gevo Development, was engaged in the business of producing and selling ethanol and related products produced at its plant located in Luverne, Minnesota (the “Agri-Energy Facility”). The Company commenced the retrofit of the Agri-Energy Facility in 2011, and commenced initial start-up operations for the production of isobutanol at this facility in May 2012. The Company expects to conclude initial start-up operations in the second half of 2012. These initial start-up operations included production of initial quantities of isobutanol produced at commercial scale, completion of initial commissioning of new equipment and development of operating discipline at commercial scale. During the 2012 third quarter, the Company made the strategic decision to pause isobutanol production at the Agri-Energy Facility for a period of time during which the Company intends to produce ethanol at the Agri-Energy Facility while it focuses on optimizing specific parts of its technology to further enhance isobutanol production rates. The Company intends to resume isobutanol production at the Agri-Energy Facility in support of future commercial operations once this work has been completed. At September 30, 2012, the Company is considered to be in the development stage as its primary activities, since Inception, have been conducting research and development, business development, business and financial planning, establishing its facilities including retrofitting the Agri-Energy Facility, initial start-up operations for isobutanol production at the Agri-Energy Facility, recruiting personnel and raising capital. 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, gaining market acceptance and demand for its products and services, and attracting and retaining qualified personnel. Until May 24, 2012, when the Company commenced initial start-up operations for the production of isobutanol at the Agri-Energy Facility, the Company derived revenue from the sale of ethanol, distiller’s grains and other related products produced as part of the ethanol production process at this facility. Similarly, the Company expects to derive revenue from the sale of ethanol, and distiller’s grains during any period in which the Agri-Energy Facility is temporarily reverted to ethanol production, including the current reversion during which the Company will focus on optimizing specific parts of its technology to further enhance isobutanol production rates. However, the production of ethanol is not the Company’s intended business and its future profitability depends on its ability to produce and market isobutanol, not on continued production and sales of ethanol. The historical operating results of Agri-Energy and the operating results reported during the retrofit to isobutanol production, the initial start-up of isobutanol production and any period when the Company may temporarily revert to ethanol production will not be indicative of future operating results for Agri-Energy or Gevo once full-scale commercial isobutanol production commences at this facility. Additionally, 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 significant revenue from the sale of isobutanol or other products that are or become the Company’s intended business.
Financial Condition	Financial Condition—The Company’s unaudited 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 three and nine months ended September 30, 2012, the Company incurred a consolidated net loss of $12.1 million and $47.5 million, respectively and had an accumulated deficit of $182.2 million at September 30, 2012. 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 private placements of convertible preferred stock, the issuance of convertible and nonconvertible debt and proceeds raised through its public offerings. The Company expects to obtain funding through additional equity offerings and issuances of debt until it achieves positive cash flow from operations. The Company’s cash and cash equivalents at September 30, 2012 totaled $92.0 million. Management expects that cash on hand at September 30, 2012, will provide the Company with adequate funding for at least the next 12 months. 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 unaudited consolidated financial statements do not include any adjustments that may result from the Company’s inability to raise sufficient funds or achieve profitability.
Basis of Presentation	Basis of Presentation—The unaudited consolidated financial statements of the Company (which includes the accounts of its wholly-owned subsidiaries Gevo Development and Agri-Energy) have been prepared, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). Accordingly, they do not include all information and footnotes required by accounting principles generally accepted in the United States of America for complete financial statements. These statements reflect all normal and recurring adjustments which, in the opinion of management, are necessary to present fairly the financial position, results of operations and cash flows of the Company at September 30, 2012 and for all periods presented. These statements should be read in conjunction with the Company’s consolidated financial statements and notes thereto included under the heading “Financial Statements and Supplementary Data” in Part II, Item 8 of the Company’s Annual Report on Form 10-K for the year ended December 31, 2011, as amended (the “Annual Report”). The consolidated statements of operations for the three and nine months ended September 30, 2012 and consolidated statements of cash flows for the nine months ended September 30, 2012 are not necessarily indicative of the results to be expected for the full year. Refer to the economic conditions described under the heading “Risk Factors” in Part II, Item 1A of this Quarterly Report on Form 10-Q. Certain prior year balances have been reclassified to conform to the current year’s presentation.

Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2012

Earnings Per Share [Abstract]

Schedule of anti-dilutive securities


	Three Months Ended September 30,				Nine Months Ended September 30,
	2012		2011		2012		2011
Convertible debt		7,905,000		—		7,905,000		—
Outstanding options to purchase common stock		1,093,026		2,144,815		1,517,605		2,284,221
Warrants to purchase common stock		1,229,998		1,086,785		1,229,998		1,086,785
Unvested restricted common stock		—		—		34,277		50,173

Total		10,228,024		3,231,600		10,686,880		3,421,179

Inventories (Tables)

9 Months Ended

Sep. 30, 2012

Inventory Disclosure [Abstract]

Summary of components of the inventory balances


	September 30, 2012		December 31, 2011
Raw materials
Corn	$	1,729	$	2,408
Enzymes and other inputs		747		151
Finished goods
Ethanol		—		349
Distiller’s grains		—		17
Work in process		420		456
Spare parts		902		433

Total inventories	$	3,798	$	3,814

Property, Plant and Equipment (Tables)

9 Months Ended

Sep. 30, 2012

Property, Plant and Equipment [Abstract]

Schedule of property, plant and equipment by classification


		September 30, 2012			December 31, 2011
Construction in progress	—	$	56,457		$	8,403
Plant machinery and equipment	10 years		10,960			10,822
Site improvements	10 years		7,007			6,994
Lab equipment, furniture and fixtures and vehicles	5 years		5,346			4,035
Demonstration plant	2 years		3,597			3,597
Buildings	10 years		2,543			2,543
Computer, office equipment and software	3 years		1,393			614
Leasehold improvements, pilot plant, land and support equipment	0 -5 years		2,058			1,759

Total property, plant and equipment			89,361			38,767
Less accumulated depreciation and amortization			(12,525	)		(9,990	)

Property, plant and equipment, net		$	76,836		$	28,777

Derivative Instruments (Tables)

9 Months Ended

Sep. 30, 2012

Derivative Instruments [Abstract]

Summary of the unrealized gains/(losses) of the Company's derivative instruments


	Three Months Ended September 30,				Nine Months Ended September 30,					Inception to September 30, 2012
	2012		2011		2012		2011			Inception to September 30, 2012
Exchange-traded futures contracts	$	638	$	1,020	$	404	$	1,775		$	866
Forward purchase contracts	$	2	$	—	$	—	$	(361	)		43

Summary of net short positions of derivative instruments


Year of Expiration	September 30, 2012 Corn Net Short Position Bushels		December 31, 2011 Corn Net Short Position Bushels
2012		81		77

The lattice model that were used to value the embedded derivative


	Issuance Date			September 30, 2012
Stock price	$	4.95		$	2.14
Conversion Rate		175.6697			175.6697
Conversion Price	$	5.69		$	5.69
Maturity date		July 1, 2022			July 1, 2022
Risk-free interest rate		1.62	%		1.65	%
Estimated stock volatility		72	%		80	%
Estimated credit spread		30	%		33	%

Convertible Notes with and without the embedded derivative and the fair value of the embedded derivative


	Issuance Date		September 30, 2012
Fair value of Convertible Notes:
With the embedded derivative	$	45,000	$	30,000
Without the embedded derivative		17,000		17,000

Estimated fair value of the embedded derivative	$	28,000	$	13,000

- Definition

Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41641-113959

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41638-113959

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41678-113959

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5580258-113959

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579245-113959

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579240-113959

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 25
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986

Reference 10: 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.(n)(2))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41620-113959

+ Details

Accounts Payable and Accrued Liabilities (Tables)

9 Months Ended

Sep. 30, 2012

Accounts Payable and Accrued Liabilities, Current [Abstract]

Schedule of accounts payable and accrued liabilities


	September 30, 2012		December 31, 2011
Accrued legal-related expenses	$	5,152	$	1,455
Accrued employee compensation		2,285		941
Accounts payable — trade		1,607		6,193
Accrued expenses — ICM, Inc.		729		1,634
Cargill license agreement		259		924
Other accrued liabilities		2,615		1,293

Total accounts payable and accrued liabilities	$	12,647	$	12,440

Secured Debt and Convertible Senior Notes (Tables)

9 Months Ended

Sep. 30, 2012

Secured Debt and Convertible Senior Notes [Abstract]

Schedule of secured debt and Convertible Senior Notes included in consolidated balance sheets


	September 30, 2012			December 31, 2011
Secured debt
Lighthouse—Paid in full at June 2012	$	—		$	1,241
TriplePoint—Paid in full at July 2013		—			5,400
TriplePoint—Matures September 2014		13,500			13,500
TriplePoint—Matures October 2015		10,146			10,575
TriplePoint—Matures January 2016		5,091			—

Total secured debt		28,737			30,716
Convertible senior notes		45,000			—

Total debt		73,737			30,716
Less:
Change in fair value of embedded derivative		(15,000	)		—
Unamortized debt discounts		(4,431	)		(2,473	)

		54,306			28,243
Less current portion of debt		(8,952	)		(3,491	)

Long-term portion of debt	$	45,354		$	24,752

Gevo Development (Tables)

9 Months Ended

Sep. 30, 2012

Gevo Development [Abstract]

Net loss incurred by Gevo Development


	Three Months Ended September 30,					Nine Months Ended September 30,						Inception To September 30, 2012
	2012			2011		2012			2011			Inception To September 30, 2012
Gevo Development Net (Loss) Gain	$	(7,579	)	$	434	$	(12,684	)	$	(1,147	)	$	(16,433	)

Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2012

Stock-Based Compensation [Abstract]

Summary of stock-based compensation expense


	Three Months Ended September 30,				Nine Months Ended September 30,				From June 9, 2005 (Date of Inception) To September 30, 2012
	2012		2011		2012		2011
Stock options and ESPP shares issued
Research and development	$	273	$	199	$	663	$	591	$	2,332
Selling, general and administrative		634		567		2,077		1,288		6,718
Restricted stock issued
Research and development		343		52		317		139		791
Selling, general and administrative		280		125		1,317		263		1,740
Warrant issued to CDP
Selling, general and administrative		—		872		2,616		2,616		13,955

Non-cash stock-based compensation		1,530		1,815		6,990		4,897		25,536
Modified stock option awards
Selling, general and administrative		—		—		890		—		1,500
Purchase of Class B interests of Gevo Development from CDP for cash
Selling, general and administrative		—		74		74		222		1,144

Cash stock-based compensation		—		74		964		222		2,644

Total stock-based compensation	$	1,530	$	1,889	$	7,954	$	5,119	$	28,180

Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2012

Fair Value Disclosures [Abstract]

The Company's estimate of the fair value of its secured debt obligations


Issuance	Carrying Value		Fair Value
TriplePoint—Matures September 2014	$	12,965	$	12,137
TriplePoint—Matures October 2015		9,125		8,486
TriplePoint—Matures January 2016		4,772		4,206

Information on Business Segments (Tables)

9 Months Ended

Sep. 30, 2012

Information on Business Segments [Abstract]

Summary of segment information


	Three Months Ended September 30,						Nine Months Ended September 30,
	2012			2011			2012			2011
Revenues:
Gevo	$	562		$	188		$	2,553		$	572
Gevo Development / Agri-Energy		—			17,318			19,908			46,748

Consolidated	$	562		$	17,506		$	22,461		$	47,320

Operating income (loss):
Gevo	$	(18,025	)	$	(12,406	)	$	(47,848	)	$	(31,850	)
Gevo Development / Agri-Energy		(6,401	)		882			(10,544	)		281

Consolidated	$	(24,426	)	$	(11,524	)	$	(58,392	)	$	(31,569	)

Interest expense:
Gevo	$	1,447		$	334		$	2,004		$	1,070
Gevo Development / Agri-Energy		1,177			464			2,157			1,471

Consolidated	$	2,624		$	798		$	4,161		$	2,541

Depreciation expense:
Gevo	$	367		$	679		$	956		$	1,829
Gevo Development / Agri-Energy		531			517			1,581			1,543

Consolidated	$	898		$	1,196		$	2,537		$	3,372

Acquisitons of plant, property and equipment:
Gevo	$	584		$	358		$	1,936		$	1,151
Gevo Development / Agri-Energy		15,850			967			49,000			2,429

Consolidated	$	16,434		$	1,325		$	50,936		$	3,580


	September 30, 2012			December 31, 2011
Total assets:
Gevo	$	149,009			104,843
Gevo Development / Agri-Energy		132,207			66,304
Intercompany eliminations		(102,854	)		(38,117	)

Consolidated	$	178,362		$	133,030

- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

+ References + Details

Nature of Business and Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		88 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Dec. 31, 2011	Dec. 31, 2010
Nature of Business, Financial Condition and Basis of Presentation (Textual) [Abstract]
Net Loss from Operation	$ (27,051)	$ (12,305)	$ (62,535)	$ (35,148)	$ (197,755)
Accumulated Deficit	(197,170)		(197,170)		(197,170)	$ (134,635)
Cash and cash equivalents	$ 91,997	$ 97,605	$ 91,997	$ 97,605	$ 91,997	$ 94,225	$ 15,274

- Definition

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Cash
-URI http://asc.fasb.org/extlink&oid=6506951

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6361293&loc=d3e6676-107765

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3044-108585

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Cash Equivalents
-URI http://asc.fasb.org/extlink&oid=6507016

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.1)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 1
-Article 5

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 7, 26
-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 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 7
-Footnote 1
-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 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 8, 9
-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.

+ Details

Earnings Per Share (Details) - shares	3 Months Ended		9 Months Ended
Earnings Per Share (Details) - shares	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Schedule of anti-dilutive securities
Total	10,228,024	3,231,600	10,686,880	3,421,179
Convertible Debt [Member]
Schedule of anti-dilutive securities
Total	7,905,000		7,905,000
Outstanding options to purchase common stock [Member]
Schedule of anti-dilutive securities
Total	1,093,026	2,144,815	1,517,605	2,284,221
Warrants to purchase common stock [Member]
Schedule of anti-dilutive securities
Total	1,229,998	1,086,785	1,229,998	1,086,785
Unvested restricted common stock [Member]
Schedule of anti-dilutive securities
Total			34,277	50,173

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Antidilution
-URI http://asc.fasb.org/extlink&oid=6505113

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Diluted Earnings Per Share
-URI http://asc.fasb.org/extlink&oid=6510752

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Contingent Stock Agreement
-URI http://asc.fasb.org/extlink&oid=6508534

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 40
-Subparagraph c
-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
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 13, 14
-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 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 07-4
-Paragraph 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 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 171
-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.

+ Details

Inventories (Details) - USD ($) $ in Thousands	Sep. 30, 2012	Dec. 31, 2011
Summary of components of the inventory balances
Work in process	$ 420	$ 456
Spare parts	902	433
Total inventories	3,798	3,814
Corn [Member]
Summary of components of the inventory balances
Raw materials	1,729	2,408
Enzymes and other inputs [Member]
Summary of components of the inventory balances
Raw materials	$ 747	151
Ethanol [Member]
Summary of components of the inventory balances
Finished goods		349
Distiller's grains [Member]
Summary of components of the inventory balances
Finished goods		$ 17

Inventories (Details Textual) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		88 Months Ended
Inventories (Details Textual) - USD ($) $ in Millions	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012
Inventories (Textual) [Abstract]
Depreciation	$ 0.5	$ 0.5	$ 1.6	$ 1.5	$ 4.2

Property, Plant and Equipment (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2012	Dec. 31, 2011
Schedule of property, plant and equipment by classification
Total property, plant and equipment	$ 89,361	$ 38,767
Isobutanol retrofit plan [Member]
Schedule of property, plant and equipment by classification
Property, plant and equipment, useful life	15 years
Total property, plant and equipment	$ 55,579
Plant machinery and equipment [Member]
Schedule of property, plant and equipment by classification
Property, plant and equipment, useful life	10 years
Total property, plant and equipment	$ 10,960	10,822
Site improvement [Member]
Schedule of property, plant and equipment by classification
Property, plant and equipment, useful life	10 years
Total property, plant and equipment	$ 7,007	6,994
Lab equipment, furniture and fixtures and vehicles [Member]
Schedule of property, plant and equipment by classification
Property, plant and equipment, useful life	5 years
Total property, plant and equipment	$ 5,346	4,035
Demonstration plant [Member]
Schedule of property, plant and equipment by classification
Property, plant and equipment, useful life	2 years
Total property, plant and equipment	$ 3,597	3,597
Building [Member]
Schedule of property, plant and equipment by classification
Property, plant and equipment, useful life	10 years
Total property, plant and equipment	$ 2,543	2,543
Computer, office equipment and software [Member]
Schedule of property, plant and equipment by classification
Property, plant and equipment, useful life	3 years
Total property, plant and equipment	$ 1,393	614
Construction in progress [Member]
Schedule of property, plant and equipment by classification
Total property, plant and equipment	$ 878	8,403
Leasehold improvements [Member]
Schedule of property, plant and equipment by classification
Property, plant and equipment, useful life	5 years
Total property, plant and equipment	$ 814	523
Pilot plant [Member]
Schedule of property, plant and equipment by classification
Property, plant and equipment, useful life	3 years
Total property, plant and equipment	$ 721	721
Land [Member]
Schedule of property, plant and equipment by classification
Total property, plant and equipment	$ 410	410
Tools and support equipment [Member]
Schedule of property, plant and equipment by classification
Property, plant and equipment, useful life	5 years
Total property, plant and equipment	$ 113	$ 105

Property Plant and Equipment (Details Textual) $ in Millions	9 Months Ended
	Sep. 30, 2012 USD ($)
Property Plant and Equipment (Textual) [Abstract]
Interest costs incurred capitalized	$ 1.3
Construction in progress	$ 48.1

Derivative Instruments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		88 Months Ended
Derivative Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012
Exchange-traded futures contracts [Member]
Summary of the unrealized gains/(losses) of the Company's derivative instruments
Derivative instruments, gain (loss)	$ 638	$ 1,020	$ 404	$ 1,775	$ 866
Forward purchase contracts [Member]
Summary of the unrealized gains/(losses) of the Company's derivative instruments
Derivative instruments, gain (loss)	$ 2			$ (361)	$ 43

- Definition

The amount of net gains and losses recognized in income during the period on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on derivative instruments not designated as hedging instruments.

+ References + Details

Derivative Instruments (Details 1) - Corn Net Short Position Bushels [Member] - Derivatives Derivatives in Thousands	9 Months Ended
	Sep. 30, 2012	Dec. 31, 2011
Summary of net short positions of derivative instruments
Derivative instruments	81	77
Year of Expiration	2012

Derivative Instruments (Details 2) - $ / shares	Sep. 30, 2012	Jul. 31, 2012
The lattice model that were used to value the embedded derivative
Stock price	$ 2.14	$ 4.95
Conversion Rate	175.6697
Conversion Price	$ 5.69
Maturity date	Jul. 01, 2022
Risk-free interest rate	1.65%
Estimated stock volatility	80.00%
Estimated credit spread	33.00%
Issuance Date [Member]
The lattice model that were used to value the embedded derivative
Stock price	$ 4.95
Conversion Rate	175.6697
Conversion Price	$ 5.69
Maturity date	Jul. 01, 2022
Risk-free interest rate	1.62%
Estimated stock volatility	72.00%
Estimated credit spread	30.00%

Derivative Instruments (Details 3) $ in Thousands	Sep. 30, 2012 USD ($)
Fair value of Convertible Notes:
With the embedded derivative	$ 30,000
Without the embedded derivative	17,000
Estimated fair value of the embedded derivative	13,000
Issuance Date [Member]
Fair value of Convertible Notes:
With the embedded derivative	45,000
Without the embedded derivative	17,000
Estimated fair value of the embedded derivative	$ 28,000

- Definition

Fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as a liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44A
-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 133
-Paragraph 44B
-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 Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44A, 44B
-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 Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 12-16, 44A, 44B
-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.

+ Details

Derivative Instruments (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		88 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Jul. 31, 2012	Dec. 31, 2011
Derivative Instruments (Textual) [Abstract]
Margin deposit	$ 277		$ 277		$ 277		$ 474
Derivative Instruments (Additional Textual) [Abstract]
Percentage of convertible senior notes embedded derivatives						7.50%
Decrease in the estimated fair value of the embedded derivative			15,000
Fair value of embedded derivatives	13,000		13,000		13,000
Exchange-traded futures contracts [Member]
Derivative Instruments (Textual) [Abstract]
Margin deposit	300		300		300		$ 500
Realized losses	$ 1,200	$ 300	$ 900	$ 800	$ 1,400

- Definition

Fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as a liability.

+ References

+ Details

- Definition

Decrease in the fair value of the embedded derivative or group of embedded derivatives included in earnings in the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44B
-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 133
-Paragraph 44A
-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 Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 12-16, 44A, 44B
-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 Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44A, 44B
-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.

+ Details

Accounts Payable and Accrued Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2012	Dec. 31, 2011
Schedule of accounts payable and accrued liabilities
Accrued legal-related expenses	$ 5,152	$ 1,455
Accrued employee compensation	2,285	941
Accounts payable - trade	1,607	6,193
Accrued expenses - ICM, Inc.	729	1,634
Cargill license agreement	259	924
Other accrued liabilities	2,615	1,293
Total accounts payable and accrued liabilities	$ 12,647	$ 12,440

- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References + Details

Secured Debt and Convertible Senior Notes (Details) - USD ($) $ in Thousands	Sep. 30, 2012	Dec. 31, 2011
Schedule of secured debt and Convertible Senior Notes included in consolidated balance sheets
Total Secured debt	$ 28,737	$ 30,716
Convertible senior notes	45,000
Total debt	73,737
Less unamortized debt discounts	(4,143)	(2,473)
Secured Debt Net	69,594	28,243
Less current portion of secured debt	(8,952)	(3,491)
Long-term portion of debt	17,910	24,752
Lighthouse - Paid in June 2012 [Member]
Schedule of secured debt and Convertible Senior Notes included in consolidated balance sheets
Secured Debt Net		1,241
TriplePoint - Matures August 2014 [Member]
Schedule of secured debt and Convertible Senior Notes included in consolidated balance sheets
Secured Debt Net		5,400
TriplePoint - Matures September 2014 [Member]
Schedule of secured debt and Convertible Senior Notes included in consolidated balance sheets
Secured Debt Net	13,500	13,500
TriplePoint - Matures October 2015 [Member]
Schedule of secured debt and Convertible Senior Notes included in consolidated balance sheets
Secured Debt Net	10,146	$ 10,575
TriplePoint - Matures January 2016 [Member]
Schedule of secured debt and Convertible Senior Notes included in consolidated balance sheets
Secured Debt Net	$ 5,091

Secured Debt and Convertible Senior Notes (Details Textual) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended	9 Months Ended	88 Months Ended
	Jul. 31, 2012 USD ($)	Sep. 30, 2012 USD ($) $ / shares	Sep. 30, 2012 USD ($) shares $ / shares	Sep. 30, 2012 USD ($) $ / shares	Jul. 05, 2012 USD ($)
Secured Long-Term Debt (Textual) [Abstract]
Proceeds from issuance of convertible debt, net			$ 40,922	$ 40,922
Secured debt and convertible senior notes (Additional Textual) [Abstract]
Percentage of interest on convertible senior notes due		7.50%	7.50%	7.50%
Maturity year of convertible senior notes			2022
Long term borrowing by subsidiary company		$ 5,000	$ 5,000	$ 5,000
Long term borrowings interest rate		11.00%	11.00%	11.00%
Convertible notes payable					$ 40,000
Discount rate used in computation of interest payment			2.00%
Valuation rate of shares for conversion			90.00%
Number of trading days for valuation			10 days
Percentage repurchase price			100.00%
Provisional Redemption description			The Company shall have a provisional redemption right (“Provisional Redemption”), at its option, to redeem, all or any part of the Convertible Notes at a price payable in cash, beginning on July 1, 2015 and prior to July 1, 2017, provided that the Company’s common stock for 20 or more trading days in a period of 30 consecutive trading days immediately prior to the redemption notice exceeds 150% of the Conversion Price of $5.69.
Number of trading days required for redemption			20 or more trading days
Number of consecutive trading days required for redemption			30 days
Required principal amount in percentage			25.00%
7.5% convertible senior notes due 2022 [Member]
Secured Long-Term Debt (Textual) [Abstract]
Aggregate principal amount on sale of Convertible notes	$ 45,000
Proceeds from issuance of convertible debt, net	40,900
Discount on sale of convertible notes	2,700
Debt issuance cost	$ 1,400
Amortization expense related to debt issuance cost		$ 0
Interest expense on convertible notes		$ 0
Conversion rate of convertible notes \| shares			175.6697
Conversion price per share common stock \| $ / shares		$ 5.69	$ 5.69	$ 5.69
Convertible Notes Prior to July 01, 2017 [Member]
Secured Long-Term Debt (Textual) [Abstract]
Conversion rate of convertible notes \| shares			202.0202
Excess to percentage of conversion price			150.00%

Significant Agreements (Details) $ in Millions	1 Months Ended	3 Months Ended			9 Months Ended		12 Months Ended
Significant Agreements (Details) $ in Millions	Sep. 30, 2011 USD ($) gal	Sep. 30, 2012 USD ($)	Sep. 30, 2011 USD ($)	Mar. 31, 2010 USD ($)	Sep. 30, 2012 USD ($) Installment	Sep. 30, 2011 USD ($)	Dec. 31, 2009 USD ($)
Parties To Contract [Line Items]
Royalty expense					$ 4.3
Refund Amount as Component of Other Long Term Liabilities		$ 1.0			$ 1.0
Significant Agreements (Textual) [Abstract]
Milestone payment \| Installment					5
Present value of license fee				$ 1.6
Royalty Fee Payable					$ 1.5
Biojet Fuel [Member]
Parties To Contract [Line Items]
Production, barrels of oil Equivalents \| gal	11,000
Defense Logistics Agency [Member]
Parties To Contract [Line Items]
Contract value	$ 0.6
Revenue from contract					0.5
ICM [Member]
Parties To Contract [Line Items]
Capital expenditure		0.1			0.7
Coca Cola [Member]
Parties To Contract [Line Items]
Revenue recognized under agreement		0.3			$ 0.9
Cargill License Agreement [Member]
Parties To Contract [Line Items]
Royalty expense				$ 2.0			$ 0.9
Terms of agreement					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
Milestone payment minimum period					12 months
Ethanol Marketing Agreement with Subsidiary of Mansfield Oil Company [Member]
Parties To Contract [Line Items]
Terms of 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.
Development and Commercialization Agreements with ICM Inc [Member]
Parties To Contract [Line Items]
Terms of agreement					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
Toray Industries [Member]
Parties To Contract [Line Items]
Amount received for Pilot Plant		1.0			$ 1.0
Amount refund from Pilot Plant		1.0			1.0
Demonstration Expense [Member] \| ICM [Member]
Parties To Contract [Line Items]
Capital expenditure		0.0	$ 0.1		0.0	$ 0.7
Retrofit Expense [Member] \| ICM [Member]
Parties To Contract [Line Items]
Capital expenditure		$ 11.8	$ 1.0		$ 48.3	$ 2.0

Gevo Development (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		88 Months Ended
Gevo Development (Details) - USD ($) $ in Thousands	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012
Net loss incurred by Gevo Development
Gevo Development Net (Loss) Gain	$ (27,051)	$ (12,305)	$ (62,535)	$ (35,148)	$ (197,755)
Gevo Development [Member]
Net loss incurred by Gevo Development
Gevo Development Net (Loss) Gain	$ (7,579)	$ 434	$ (12,684)	$ (1,147)

Gevo Development (Details Textual) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended			33 Months Ended	88 Months Ended
	Sep. 30, 2012 USD ($) $ / shares shares	Sep. 30, 2011 USD ($)	Sep. 30, 2012 USD ($) Type $ / shares shares	Sep. 30, 2011 USD ($)	Sep. 22, 2010 USD ($)	Oct. 09, 2012	Sep. 30, 2012 USD ($) $ / shares shares	Dec. 31, 2011 USD ($)
Class of Stock [Line Items]
Equity ownership of wholly owned subsidiary			100.00%
Stock-based compensation expenses related to warrant agreement			$ 0	$ 0
Subsidiary Company Development (Textual) [Abstract]
Proceeds from the exercise of warrants							$ 592
Proceeds from the exercise of warrants			$ 14,000
Warrant Agreement Exercise Price, Fair Value \| $ / shares	$ 2.70		$ 2.70				$ 2.70
Number of Classes of Membership \| Type			2
Percentage of warrant shares vested			50.00%
Warrant expiry period			2016-09
CDP Gevo LLC [Member]
Class of Stock [Line Items]
Common Stock Issued But Not Subscribed \| shares	858,000		858,000				858,000
Warrant Agreement [Member]
Class of Stock [Line Items]
Stock-based compensation expenses related to warrant agreement		$ 900	$ 2,600	2,600
Remaining warrant shares vested period						2 years
Gevo Development [Member]
Related Party Transaction [Line Items]
Creditors	$ 700		$ 700				$ 700	$ 4,500
Common Class B [Member]
Class of Stock [Line Items]
Equity ownership of wholly owned subsidiary			100.00%
Stock-based compensation expenses related to warrant agreement					$ 800
Consideration for Exchange of Class B Interest			$ 1,100
Common Class B [Member] \| Co Managing Directors [Member]
Class of Stock [Line Items]
Stock-based compensation expenses related to warrant agreement			$ 100
Common Class B [Member] \| CDP Gevo LLC [Member]
Class of Stock [Line Items]
Outstanding Interest Rate	10.00%		10.00%				10.00%
Gevo Development [Member]
Class of Stock [Line Items]
Capital Contribution to Subsidiaries	$ 23,200	$ 1,000	$ 43,800	$ 3,800			$ 68,100

Redfield Energy, LLC (Details) gal in Millions, $ in Millions	9 Months Ended
	Sep. 30, 2012 USD ($) gal Person	Sep. 15, 2011 shares
Redfield Energy LLC (Textual) [Abstract]
Members in board of managers \| Person	11
Redfield [Member]
Schedule of Equity Method Investments [Line Items]
Redfield ethanol production facility \| gal	50
Cost for retrofit of Redfield Facilities \| $	$ 0.4
Limited partners capital account units issued \| shares		100

Stock-Based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		88 Months Ended
Stock-Based Compensation (Details) - USD ($) $ in Thousands	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012
Stock Based Compensation Expense
Non-cash stock-based compensation	$ 1,530	$ 1,815	$ 6,990	$ 4,897	$ 25,536
Cash stock-based compensation		74	964	222	2,644
Total stock-based compensation	1,530	1,889	7,954	5,119	28,180
Research and Development Expense [Member] \| Stock options and ESPP shares issued [Member]
Stock Based Compensation Expense
Non-cash stock-based compensation	273	199	663	591	2,332
Research and Development Expense [Member] \| Restricted Stock Issued to Employees and Board Members [Member]
Stock Based Compensation Expense
Non-cash stock-based compensation	343	52	317	139	791
Selling, General and Administrative Expense [Member] \| Stock options and ESPP shares issued [Member]
Stock Based Compensation Expense
Non-cash stock-based compensation	634	567	2,077	1,288	6,718
Selling, General and Administrative Expense [Member] \| Restricted Stock Issued to Employees and Board Members [Member]
Stock Based Compensation Expense
Non-cash stock-based compensation	$ 280	125	1,317	263	1,740
Selling, General and Administrative Expense [Member] \| Warrants Issued to CDP Gevo LLC [Member]
Stock Based Compensation Expense
Non-cash stock-based compensation		872	2,616	2,616	13,955
Selling, General and Administrative Expense [Member] \| Modified Stock Option Awards [Member]
Stock Based Compensation Expense
Cash stock-based compensation			890		1,500
Selling, General and Administrative Expense [Member] \| Purchase of Interest [Member]
Stock Based Compensation Expense
Cash stock-based compensation		$ 74	$ 74	$ 222	$ 1,144

Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	9 Months Ended		88 Months Ended
	Jul. 31, 2012	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Dec. 31, 2011	Feb. 28, 2011
Stockholders' Equity (Textual) [Abstract]
Common stock shares issued by company	12,500,000
Price of common stock share	$ 4.95	$ 2.14		$ 2.14
Received proceed on common stock	$ 57,400	$ 57,442	$ 113,012	$ 167,850
Common stock issuing cost	$ 4,400			$ 1,867
Common stock incentive plan						2,576,989
Available shares for grant		0		0	1,665,802

Fair Value Measurements (Details) $ in Thousands	Sep. 30, 2012 USD ($)
TriplePoint - Matures September 2014 [Member] \| Carrying Value [Member]
Estimated fair value of secured debt obligations
Fair value of secured debt obligations	$ 12,965
TriplePoint - Matures September 2014 [Member] \| Fair Value [Member]
Estimated fair value of secured debt obligations
Fair value of secured debt obligations	12,137
TriplePoint - Matures October 2015 [Member] \| Carrying Value [Member]
Estimated fair value of secured debt obligations
Fair value of secured debt obligations	9,125
TriplePoint - Matures October 2015 [Member] \| Fair Value [Member]
Estimated fair value of secured debt obligations
Fair value of secured debt obligations	8,486
TriplePoint - Matures January 2016 [Member] \| Carrying Value [Member]
Estimated fair value of secured debt obligations
Fair value of secured debt obligations	4,772
TriplePoint - Matures January 2016 [Member] \| Fair Value [Member]
Estimated fair value of secured debt obligations
Fair value of secured debt obligations	$ 4,206

Fair Value Measurements (Details Textual) - USD ($) $ in Thousands	Sep. 30, 2012	Dec. 31, 2011
Fair Value Measurements (Textual) [Abstract]
Net of Debt Discount	$ 902	$ 969
Convertible Debt [Member]
Fair Value Measurements (Textual) [Abstract]
Convertible Notes issued	42,300
Net of Debt Discount	2,700
Estimated fair value of convertible notes	30,000
Exchange Traded Options [Member]
Fair Value Measurements (Textual) [Abstract]
Fair value of Exchange Traded Derivative Instrument	$ 200	$ (200)

Information on Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		88 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Dec. 31, 2011
Summary of segment information
Revenues:	$ 562	$ 17,506	$ 22,461	$ 47,320	$ 104,649
Operating income (loss):	(24,426)	(11,524)	(58,392)	(31,569)
Interest expenses:	2,624	798	4,161	2,541	12,740
Depreciation Expense:	898	1,196	2,537	3,372
Acquisitions of plant, property and equipment:	16,398	1,325	50,936	3,580	67,191
Total assets:	178,650		178,650		178,650	$ 133,030
Gevo [Member]
Summary of segment information
Revenues:	562	188	2,553	572
Operating income (loss):	(18,025)	(12,406)	(47,848)	(31,850)
Interest expenses:	1,447	334	2,004	1,070
Depreciation Expense:	367	679	956	1,829
Acquisitions of plant, property and equipment:	584	358	1,936	1,151
Total assets:	149,297		149,297		149,297	104,843
Gevo Development / Agri-Energy [Member]
Summary of segment information
Revenues:		17,318	19,908	46,748
Operating income (loss):	(6,401)	882	(10,544)	281
Interest expenses:	1,177	464	2,157	1,471
Depreciation Expense:	531	517	1,581	1,543
Acquisitions of plant, property and equipment:	15,814	$ 967	48,964	$ 2,429
Total assets:	132,207		132,207		132,207	66,304
Intersegment Elimination [Member]
Summary of segment information
Total assets:	$ (102,854)		$ (102,854)		$ (102,854)	$ (38,117)