OTHER NONINTEREST REVENUE AND EXPENSE (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other noninterest revenue [Abstract]
Bank-owned life insurance	$ 7,585	$ 7,457	$ 8,848
Other miscellaneous income	12,147	12,143	12,883
Total other noninterest income	19,732	19,600	21,731
Other noninterest income [Abstract]
Advertising	5,044	4,288	4,388
Foreclosed property expense	4,354	7,418	17,071
Telecommunications	5,087	5,226	5,625
Public relations	2,694	2,769	4,101
Data processing	26,835	24,148	23,830
Computer software	11,381	10,500	10,525
Amortization of intangibles	3,636	3,963	4,443
Amortization of intangible	3,635	3,963	4,443
Legal expenses	8,543	30,346	9,822
Merger expense	2	25	1,761
Postage and shipping	4,236	4,535	4,745
Other miscellaneous expense	56,684	57,540	57,863
Total other noninterest expense	$ 128,495	$ 150,758	$ 144,174