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12. Agreements (Details) (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Agreements Details    
Ethanol sales $ 106,565,941 $ 128,830,630
Distiller's Grains 26,490,413 35,468,559
Corn Oil 2,609,061 2,582,858
Corn purchases 95,999,548 156,984,918
Grain Sorghum Purchases 11,522,666 0
Accounts receivable 641,147 394,784
Accounts payable $ 2,227,828 $ 2,650,013