Components of Inventory Balances (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Inventory [Line Items]
Spare parts	$ 1,401	$ 1,349
Total inventories	4,178	3,458
Corn
Inventory [Line Items]
Raw materials	212	108
Enzymes And Other Inputs
Inventory [Line Items]
Raw materials	217	309
Nutrients
Inventory [Line Items]
Raw materials	14	10
Ethanol
Inventory [Line Items]
Finished goods	190	72
Isobutanol
Inventory [Line Items]
Finished goods	994	755
Jet Fuels Isooctane And Isooctene
Inventory [Line Items]
Finished goods	726	519
Distiller's grains
Inventory [Line Items]
Finished goods	18
Agri-Energy
Inventory [Line Items]
Work in process	245	274
Gevo
Inventory [Line Items]
Work in process	$ 161	$ 62

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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+ References

No definition available.

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- Definition

Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.6(a))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
-Section 35
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=68049868&loc=d3e3927-108312

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765

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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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Gross amount of components of assembled products that can be sold directly or indirectly through sales of assembled products.

+ References

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