INVESTMENT SECURITIES (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Investment securities available-for-sale [Abstract]
Amortized cost	$ 309,685		$ 309,685		$ 320,062
Unrealized gains	2,798		2,798		465
Unrealized losses	(1,485)		(1,485)		(5,890)
Estimated fair value	310,998		310,998		314,637
Proceeds from calls and maturities of available-for-sale securities	15,683	$ 3,465	32,683	$ 14,580
Gross realized gains from sales/calls of available-for-sale securities	47	0	47	0
Gross realized losses from sales/calls of available-for-sale securities	(53)	$ 0	(53)	$ 0
U.S. Treasury Securities [Member]
Investment securities available-for-sale [Abstract]
Amortized cost	36,463		36,463		50,825
Unrealized gains	636		636		14
Unrealized losses	(29)		(29)		(157)
Estimated fair value	37,070		37,070		50,682
Securities of U.S. Government Agencies and Corporations [Member]
Investment securities available-for-sale [Abstract]
Amortized cost	49,823		49,823		42,215
Unrealized gains	382		382		89
Unrealized losses	(57)		(57)		(228)
Estimated fair value	50,148		50,148		42,076
Obligations of States and Political Subdivisions [Member]
Investment securities available-for-sale [Abstract]
Amortized cost	22,728		22,728		19,110
Unrealized gains	645		645		181
Unrealized losses	(9)		(9)		(123)
Estimated fair value	23,364		23,364		19,168
Collateralized Mortgage Obligations [Member]
Investment securities available-for-sale [Abstract]
Amortized cost	67,618		67,618		65,615
Unrealized gains	358		358		34
Unrealized losses	(409)		(409)		(1,850)
Estimated fair value	67,567		67,567		63,799
Mortgage-backed Securities [Member]
Investment securities available-for-sale [Abstract]
Amortized cost	133,053		133,053		142,297
Unrealized gains	777		777		147
Unrealized losses	(981)		(981)		(3,532)
Estimated fair value	$ 132,849		$ 132,849		$ 138,912