INVESTMENT SECURITIES - Schedule of Unrealized Losses and Fair Value by Investment Category for Securities Available for Sale (Details) $ in Thousands	Sep. 30, 2020 USD ($) security	Dec. 31, 2019 USD ($) security
Count
Total | security	103	141
Fair Value
Less than 12 Months	$ 73,949	$ 62,100
12 Months or More	28,296	17,861
Total	102,245	79,961
Unrealized Losses
Less than 12 Months	(741)	(430)
12 Months or More	(387)	(349)
Total	$ (1,128)	$ (779)
Obligations of U.S. government agencies and corporations
Count
Total | security	19	21
Fair Value
Less than 12 Months	$ 13,218	$ 19,980
12 Months or More	8,527	955
Total	21,745	20,935
Unrealized Losses
Less than 12 Months	(49)	(94)
12 Months or More	(19)	(6)
Total	$ (68)	$ (100)
Obligations of state and political subdivisions
Count
Total | security	9	10
Fair Value
Less than 12 Months	$ 0	$ 212
12 Months or More	5,231	371
Total	5,231	583
Unrealized Losses
Less than 12 Months	0	(1)
12 Months or More	(64)	(11)
Total	$ (64)	$ (12)
Corporate bonds
Count
Total | security	27	21
Fair Value
Less than 12 Months	$ 6,887	$ 495
12 Months or More	5,559	7,829
Total	12,446	8,324
Unrealized Losses
Less than 12 Months	(123)	(5)
12 Months or More	(192)	(269)
Total	$ (315)	$ (274)
Residential mortgage-backed securities
Count
Total | security	20	32
Fair Value
Less than 12 Months	$ 45,277	$ 12,341
12 Months or More	0	6,190
Total	45,277	18,531
Unrealized Losses
Less than 12 Months	(496)	(56)
12 Months or More	0	(29)
Total	$ (496)	$ (85)
Commercial mortgage-backed securities
Count
Total | security	28	57
Fair Value
Less than 12 Months	$ 8,567	$ 29,072
12 Months or More	8,979	2,516
Total	17,546	31,588
Unrealized Losses
Less than 12 Months	(73)	(274)
12 Months or More	(112)	(34)
Total	$ (185)	$ (308)