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11. Agreements (Tables)
 9 Months Ended
Sep. 30, 2015
Agreements Tables  
Schedule of working capital agreement activity
    Three months ended September 30,     Nine months ended September 30,  
    2015     2014     2015     2014  
Ethanol sales   $ 23,906     $ 33,641     $ 70,765     $ 121,388  
Wet distiller's grains sales     5,609       8,175       19,568       30,970  
Corn oil sales     835       1018       2,771       3,263  
Corn purchases     24,056       27,616       74,949       94,563  
Milo Purchases     -       -       -       -  
Accounts receivable     312       -       312       -  
Accounts payable     1,539       1,904       1,539       1,904