INVESTMENT SECURITIES - INVESTMENT CATEGORY (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Available-for-sale debt securities
Less than 12 months Fair Value	$ 118,239	$ 140,863
Less than 12 months Unrealized Losses	(481)	(2,497)
12 months or more Fair Value	42,363	169,210
12 months or more Unrealized Losses	(231)	(2,503)
Total Fair Value	160,602	310,073
Total Unrealized Losses	$ (712)	$ (5,000)
Number of securities held	173	182
Number of securities held in an unrealized loss position	34	65
Held-to-maturity debt securities
Less than 12 months Fair Value	$ 4	$ 39,604
Less than 12 months Unrealized Losses	(2)	(515)
12 months or more Fair Value	4,827	5,886
12 months or more Unrealized Losses	(19)	(56)
Total Fair Value	4,831	45,490
Total Unrealized Losses	(21)	(571)
U.S. Treasury securities and U.S. Government agencies
Available-for-sale debt securities
Less than 12 months Fair Value	40,165	71,627
Less than 12 months Unrealized Losses	(176)	(598)
12 months or more Fair Value	14,992	106,136
12 months or more Unrealized Losses	(8)	(1,056)
Total Fair Value	55,157	177,763
Total Unrealized Losses	(184)	(1,654)
Mortgage backed securities - residential
Available-for-sale debt securities
Less than 12 months Fair Value	65,630	43,691
Less than 12 months Unrealized Losses	(269)	(484)
12 months or more Fair Value	16,633	32,003
12 months or more Unrealized Losses	(88)	(769)
Total Fair Value	82,263	75,694
Total Unrealized Losses	(357)	(1,253)
Collateralized mortgage obligations
Available-for-sale debt securities
Less than 12 months Fair Value	12,444	16,487
Less than 12 months Unrealized Losses	(36)	(473)
12 months or more Fair Value	10,738	31,071
12 months or more Unrealized Losses	(135)	(678)
Total Fair Value	23,182	47,558
Total Unrealized Losses	(171)	(1,151)
Held-to-maturity debt securities
Less than 12 months Fair Value	4
Less than 12 months Unrealized Losses	(2)
12 months or more Fair Value	4,827	5,539
12 months or more Unrealized Losses	(19)	(46)
Total Fair Value	4,831	5,539
Total Unrealized Losses	$ (21)	(46)
Corporate bonds
Available-for-sale debt securities
Less than 12 months Fair Value		9,058
Less than 12 months Unrealized Losses		(942)
Total Fair Value		9,058
Total Unrealized Losses		(942)
Held-to-maturity debt securities
Less than 12 months Fair Value		39,499
Less than 12 months Unrealized Losses		(514)
Total Fair Value		39,499
Total Unrealized Losses		(514)
Obligations of state and political subdivisions
Held-to-maturity debt securities
Less than 12 months Fair Value		105
Less than 12 months Unrealized Losses		(1)
12 months or more Fair Value		347
12 months or more Unrealized Losses		(10)
Total Fair Value		452
Total Unrealized Losses		$ (11)