INVESTMENT SECURITIES - Schedule of Gross Unrealized Losses and Fair Value of Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Estimated Fair Value
Less Than 12 Months	$ 34,279	$ 131,176
12 Months or More	3,950	57,151
Total	38,229	188,327
Unrealized Losses
Less Than 12 Months	(347)	(705)
12 Months or More	(96)	(591)
Total	(443)	(1,296)
State, county and municipal securities
Estimated Fair Value
Less Than 12 Months		803
12 Months or More		0
Total		803
Unrealized Losses
Less Than 12 Months		(2)
12 Months or More		0
Total		(2)
Corporate debt securities
Estimated Fair Value
Less Than 12 Months	10,159	2,573
12 Months or More	0	0
Total	10,159	2,573
Unrealized Losses
Less Than 12 Months	(233)	(2)
12 Months or More	0	0
Total	(233)	(2)
SBA pool securities
Estimated Fair Value
Less Than 12 Months	0	28,521
12 Months or More	3,948	4,825
Total	3,948	33,346
Unrealized Losses
Less Than 12 Months	0	(285)
12 Months or More	(96)	(124)
Total	(96)	(409)
Mortgage-backed securities
Estimated Fair Value
Less Than 12 Months	24,120	99,279
12 Months or More	2	52,326
Total	24,122	151,605
Unrealized Losses
Less Than 12 Months	(114)	(416)
12 Months or More	0	(467)
Total	$ (114)	$ (883)