INVESTMENT SECURITIES (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Investment securities available-for-sale [Abstract]
Amortized cost	$ 306,994		$ 306,994		$ 279,875
Unrealized gains	498		498		556
Unrealized losses	(3,105)		(3,105)		(3,352)
Estimated fair value	304,387		304,387		277,079
Proceeds from sales/calls of available-for-sale securities	0	$ 16,726	2,737	$ 20,704
Gross realized gains from sales of available-for-sale securities	0	0	0	14
Gross realized losses from sales/calls of available-for-sale securities	0	$ 0	(16)	$ 0
U.S. Treasury Securities [Member]
Investment securities available-for-sale [Abstract]
Amortized cost	28,660		28,660		28,738
Unrealized gains	0		0		2
Unrealized losses	(94)		(94)		(88)
Estimated fair value	28,566		28,566		28,652
Securities of U.S. Government Agencies and Corporations [Member]
Investment securities available-for-sale [Abstract]
Amortized cost	22,370		22,370		24,382
Unrealized gains	7		7		2
Unrealized losses	(154)		(154)		(187)
Estimated fair value	22,223		22,223		24,197
Obligations of States and Political Subdivisions [Member]
Investment securities available-for-sale [Abstract]
Amortized cost	30,345		30,345		30,870
Unrealized gains	263		263		271
Unrealized losses	(114)		(114)		(253)
Estimated fair value	30,494		30,494		30,888
Collateralized Mortgage Obligations [Member]
Investment securities available-for-sale [Abstract]
Amortized cost	67,465		67,465		51,002
Unrealized gains	10		10		1
Unrealized losses	(940)		(940)		(1,065)
Estimated fair value	66,535		66,535		49,938
Mortgage-backed Securities [Member]
Investment securities available-for-sale [Abstract]
Amortized cost	158,154		158,154		144,883
Unrealized gains	218		218		280
Unrealized losses	(1,803)		(1,803)		(1,759)
Estimated fair value	$ 156,569		$ 156,569		$ 143,404