SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)		12 Months Ended
	Jan. 01, 2018 USD ($) installment	Dec. 31, 2017 USD ($) $ / bu	Dec. 31, 2016 USD ($)
Income Taxes
Excess of net financial basis over tax basis		$ 8,500,000	$ 8,000,000
Revenue Recognition
Annual contractual payments to Cargill to arrange for the delivery of the corn and other agency services	$ 60,000	$ 70,000
Number of installments | installment	4
Incentive paid per bushel to members who deliver corn under Method A | $ / bu		0.05
Agency fee paid per bushel by the members who elect Method B | $ / bu		0.02
Payment made by Cargill for corn delivered using Method B		$ 0
Concentrations
Cash balance in excess of the FDIC insurance limits		$ 6,500,000
Minimum
Property and equipment
Estimated useful lives		5 years
Maximum
Property and equipment
Estimated useful lives		10 years