ASSETS ACQUIRED IN FDIC-ASSISTED ACQUISITIONS (Details 2) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Covered Loans [Line Items]
Balance, beginning of the year	$ 15,578	$ 25,493	$ 25,493
Accretion	8,105	20,822	22,188
Transfer to covered other real estate owned	(2,565)	(1,955)
Transfer to purchased, non-covered loans due to loss-share expiration	(84)	0	0
Balance, ending of year	10,701	20,741	15,578
Loans with Deterioration of Credit Quality [Member]
Covered Loans [Line Items]
Balance, beginning of the year	271,279	390,237	390,237
Charge-offs	(5,062)	(7,570)	(9,255)
Accretion	8,105	20,822	22,188
Transfer to covered other real estate owned	(6,909)	(10,840)	(13,650)
Transfer to purchased, non-covered loans due to loss-share expiration	(15,462)	0	(15,475)
Payments received	(59,930)	(79,060)	(102,996)
Other	0	0	230
Balance, ending of year	$ 191,021	$ 313,589	$ 271,279