OTHER NONINTEREST REVENUE AND EXPENSE (Other Noninterest Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
OTHER NONINTEREST REVENUE AND EXPENSE [Abstract]
Advertising	$ 1,185	$ 925	$ 2,885	$ 2,601
Foreclosed property expense	447	859	2,457	3,349
Telecommunications	1,192	1,288	3,572	3,842
Public relations	675	718	2,049	1,978
Data processing	6,942	6,856	20,795	19,932
Computer software	3,074	2,976	8,968	8,368
Amortization of intangibles	994	923	3,034	2,672
Legal fees	1,016	1,064	3,575	7,353
Merger expense				2
Postage and shipping	1,050	1,059	3,305	3,161
Other miscellaneous expense	12,719	13,703	37,825	41,243
Total other noninterest expense	$ 29,294	$ 30,371	$ 88,465	$ 94,501