ASSETS ACQUIRED IN FDIC-ASSISTED ACQUISITIONS (Details 2) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Covered Loans [Line Items]
Transfer to covered other real estate owned	$ (3,871)	$ (2,565)
Loans with Deterioration of Credit Quality [Member]
Covered Loans [Line Items]
Balance, beginning of year	137,529	271,279	$ 271,279
Charge-offs, net of recoveries	(2,218)	(5,062)	(5,558)
Accretion	2,855	8,105	9,658
Transfer to covered other real estate owned	(2,391)	(6,909)	(7,910)
Transfer to purchased, non-covered loans due to loss-share expiration	(45,908)	(15,462)	(50,568)
Payments received	(27,576)	(60,930)	(79,372)
Balance, ending of year	$ 62,291	$ 191,021	$ 137,529