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Note 9 - Segment Information (Tables)

3 Months Ended

Mar. 31, 2014

Segment Reporting [Abstract]

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

Three Months Ended		United States				All Foreign Countries				Total
March 31, 2014		$	79,928			$	2,269			$	82,197
March 31, 2013		$	87,978			$	4,187			$	92,165

Schedule of Segment Reporting Information, by Segment [Table Text Block]

		For the three months ended March 31,
		2014				2013
Revenues
Chemicals		$	30,276			$	40,136
Biofuels			51,921				52,029
Revenues		$	82,197			$	92,165
Segment gross profit
Chemicals		$	9,034			$	13,066
Biofuels			568				8,315
Segment gross margins			9,602				21,381
Corporate expenses			(2,151	)			(2,431	)
Income before interest and taxes			7,451				18,950
Interest and other income			2,551				1,212
Interest and other expense			(6	)			(6	)
Provision for income taxes			(3,722	)			(6,106	)
Net income		$	6,274			$	14,050

X

- Definition

Tabular disclosure of the names of foreign countries from which revenue is material and the amount of revenue from external customers attributed to those countries. An entity may also provide subtotals of geographic information about groups of countries.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

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-Section 50

-Paragraph 41

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X

- 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

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-Publisher FASB

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-Topic 280

-SubTopic 10

-Section 50

-Paragraph 21

-Subparagraph (b)

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