SECURITIES - Amortized cost, related estimated fair value, and unrealized gains and losses (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Available-for-Sale Securities
Amortized Cost	$ 299,941	$ 272,585
Gross Unrealized Gains	14,398	6,336
Gross Unrealized Losses	(1,650)	(993)
Total	312,689	277,928
Other mortgage backed debt securities [Member]
Available-for-Sale Securities
Amortized Cost	28,649	11,145
Gross Unrealized Gains	89	3
Gross Unrealized Losses	(102)	(10)
Total	28,636	11,138
U.S. Treasury Securities [Member]
Available-for-Sale Securities
Amortized Cost	0	2,852
Gross Unrealized Gains	0	3
Gross Unrealized Losses	0	0
Total	0	2,855
Obligations of U.S. Government Corporations and Agencies Mortgage-backed [Member]
Available-for-Sale Securities
Amortized Cost	61,994	77,131
Gross Unrealized Gains	2,064	539
Gross Unrealized Losses	(91)	(387)
Total	63,967	77,283
Obligations of US Government Corporations and Agencies Other [Member]
Available-for-Sale Securities
Amortized Cost	11,754	10,381
Gross Unrealized Gains	1	4
Gross Unrealized Losses	(139)	(88)
Total	11,616	10,297
Obligations of state and political subdivisions [Member]
Available-for-Sale Securities
Amortized Cost	139,006	114,934
Gross Unrealized Gains	11,869	5,490
Gross Unrealized Losses	(10)	(48)
Total	150,865	120,376
Asset-backed Securities [Member]
Available-for-Sale Securities
Amortized Cost	40,127	37,596
Gross Unrealized Gains	0	115
Gross Unrealized Losses	(1,282)	(175)
Total	38,845	37,536
Corporate debt securities [Member]
Available-for-Sale Securities
Amortized Cost	18,411	18,546
Gross Unrealized Gains	375	182
Gross Unrealized Losses	(26)	(285)
Total	$ 18,760	$ 18,443