7. COMMITMENTS AND CONTINGENCIES (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012
Sales commitments amount, fixed price contracts	$ 2,809
EthanolMember
Sales commitments amount, fixed price contracts	877
Indexed-Price Contracts, gallons	106,166
WetDistillersGrainMember
Sales commitments amount, fixed price contracts	$ 1,932
Indexed-Price Contracts, gallons	46