FAIR VALUES OF FINANCIAL INSTRUMENTS - Fair Value Option Loans Held-for-Sale (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Continuing Operations
Fair Value
Total loans	$ 1,695		$ 10,636
Nonaccrual loans	0		0
Loans past due 90 days or more and still accruing	0		0
Unpaid Principal Balance
Total loans	1,671		10,606
Nonaccrual loans	0		0
Loans past due 90 days or more and still accruing	0		0
Difference
Total loans	24		30
Nonaccrual loans	0		0
Loans past due 90 days or more and still accruing	0		0
Net gains from fair value changes	24	$ 55
Discontinued Operations
Fair Value
Total loans	420,449		406,338
Nonaccrual loans	56,731		54,151
Loans past due 90 days or more and still accruing	0		0
Unpaid Principal Balance
Total loans	408,318		397,283
Nonaccrual loans	57,216		54,824
Loans past due 90 days or more and still accruing	0		0
Difference
Total loans	12,131		9,055
Nonaccrual loans	(485)		(673)
Loans past due 90 days or more and still accruing	0		$ 0
Net gains from fair value changes	$ 10,793	$ 14,173