BUSINESS COMBINATIONS (Details 4) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Transfers to purchased non-covered other real estate owned	$ (3,871)	$ (2,565)
Non Covered Loan [Member]
Balance, beginning of year	771,554	674,239	$ 674,239
Charge-offs, net of recoveries	(904)	(814)	(991)
Additions due to acquisitions	402,942	195,818	195,818
Accretion	10,071	8,055	10,590
Transfers to purchased non-covered other real estate owned	(3,871)	(2,565)	(4,473)
Transfer from covered loans due to loss-share expiration	45,908	15,462	50,568
Payments received	(158,700)	(123,311)	(154,666)
Other	90	610	469
Balance, ending of year	$ 1,067,090	$ 767,494	$ 771,554