PURCHASED ACCOUNTS RECEIVABLE (Details) - USD ($)		12 Months Ended
	Mar. 10, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Noninterest income, income from purchased accounts receivable		$ 8,364,000	$ 5,706,000	$ 4,198,000
Purchased accounts receivable		4,980,000	52,688,000
Reduction in outstanding debt in exchange for controlling stake, percent	70.00%
Additional loans offered in debt restructuring	$ 2,000,000,000
Creditor's approval required for debt restructuring, percent	75.00%
Impairment of purchased accounts receivable		2,927,000	0	0
Bioenergy Company | U.S.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchased accounts receivable			7,900,000
Financing Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Noninterest income, income from purchased accounts receivable		$ 292,000	$ 872,000	$ 552,000