Note 14 - Derivative Instruments and Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance [Table Text Block]

	Classified	Year Ended December 31, 2012		Six Months Ended December 31, 2011			Year Ended June 30, 2011
Commodity derivatives	Cost of sales	$	2,173	$	(634	)	$	11,299

Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block]

	Amounts of Gains (Losses) Recognized in OCI on Derivatives									Amount of Gains (Losses) Reclassified from AOCI into Earnings
Derivatives in Cash Flow Hedging Relationship	Year Ended December 31, 2012			Six Months Ended December 31, 2011			Year Ended June 30, 2011		Location of Losses Reclassified  from AOCI  into Income	Year Ended December 31, 2012			Six Months Ended December 31, 2011			Year Ended  June 30, 2011
Commodity derivatives	$	(286	)	$	(1,252	)		n/a	Cost of sales	$	(413	)	$	(539	)		n/a

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

					Fair Value Measurements
	Classified	Total			Level 1			Level 2		Level 3
December 31, 2011
Assets
Corn Derivatives	Derivative Assets	$	1,091		$	1,091		$	-	$	-
Ethanol Derivatives	Derivative Assets	$	213		$	213
Liabilities
Corn Derivatives	Derivative Liabilities	$	(974	)	$	( 974	)	$	-	$	-
Ethanol Derivatives	Derivative Liabilities	$	(2,491	)	$	(2,491	)	$	-	$	-