ASSETS ACQUIRED IN FDIC-ASSISTED ACQUISITIONS (Details 4) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Business Combinations [Abstract]
Beginning balance	$ 6,301	$ 31,351	$ 31,351
Payments received from FDIC	(4,770)	(19,089)	(19,273)
Amortization, net	(3,351)	(7,914)	(8,878)
Changes in clawback liability	(682)	(1,483)	(2,008)
Net charge-offs on covered loans	(4,118)	1,180	416
Write downs of covered other real estate owned	203	2,349	4,752
Reimbursable expenses on covered assets	604	2,312	2,582
Other activity, net	(1,962)	(4,200)	(2,641)
Ending balance	$ (7,775)	$ 4,506	$ 6,301