Related Party Transactions (Details 4) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Related party transactions entered into for the time periods presented
Sales revenues		$ 893,950	$ 749,746	$ 825,220
Service fee revenues	[1]	24,357	17,957	20,393
Purchases of product		615,739	463,832	0
Lease income	[2]	6,175	5,966	6,664
Labor and benefits reimbursement	[3]	13,894	12,809	11,567
Other expenses	[4]	0	149	$ 1,059
Accounts receivable	[5]	30,252	26,254
Accounts payable	[6]	$ 27,866	$ 23,961

[1] Service fee revenues include management fee, corn origination fee, ethanol and DDG marketing fees, and other commissions.

[2] Lease income includes the lease of the Company’s Albion, Michigan and Clymers, Indiana grain facilities as well as certain railcars to the unconsolidated ethanol LLCs and IANR.

[3] The Company provides all operational labor to the unconsolidated ethanol LLCs and charges them an amount equal to the Company’s costs of the related services.

[4] Other expenses include payments to IANR for repair facility rent and use of their railroad reporting mark, payment to LTG for the lease of railcars and other various expense. December 31,(in thousands)2017 2016Accounts receivable (e)30,252 26,254Accounts payable (f)27,866 23,961

[5] Accounts receivable represents amounts due from related parties for sales of corn, leasing revenue and service fees.

[6] Accounts payable represents amounts due to related parties for purchases of ethanol and other various items.