BUSINESS COMBINATIONS (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Aug. 14, 2015
Business Acquisition [Line Items]
Business Acquisition, Transaction Costs			$ 2,600
Goodwill	$ 66,276	$ 42,689
Oak Street Holdings Corporation [Domain]
Business Acquisition [Line Items]
Cash consideration	110,000
Payoff of long-term borrowings	197,839
Total purchase consideration	307,839
Cash			2,248
Loans			238,029
Intangible assets			268
Other assets			2,633
Total assets			243,178
Other liabilities			1,615
Total liabilities			1,615
Net identifiable assets			$ 241,563
Goodwill	$ 66,276