PURCHASED ACCOUNTS RECEIVABLE (Details) - USD ($) $ in Thousands		12 Months Ended
	Mar. 10, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Mar. 11, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Noninterest income, income from purchased accounts receivable		$ 5,706	$ 4,198	$ 2,156
Other short-term investments, accounts receivable		7,900
Other short-term investments, delinquent accounts receivable balance		5,400
Subsequent Event
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other short-term investments, additional delinquent accounts receivable balance					$ 2,500
Reduction in outstanding debt in exchange for controlling stake, percent	70.00%
Additional loans offered in debt restructuring	$ 2,000,000
Creditor's approval required for debt restructuring, percent	75.00%
Financing Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Noninterest income, income from purchased accounts receivable		$ 872	$ 552	$ 10