INVESTMENT SECURITIES - Schedule of Gross Unrealized Losses and Fair Value of Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Estimated Fair Value
Less than 12 months, estimated fair value	$ 286,934	$ 6,826
12 months or more, estimated fair value	3,723	3,953
Total estimated fair value	290,657	10,779
Unrealized Losses
Less than 12 months, unrealized losses	(5,045)	(12)
12 months or more, unrealized losses	(208)	(183)
Total unrealized losses	(5,253)	(195)
U.S. government sponsored agencies
Estimated Fair Value
Less than 12 months, estimated fair value	1,033
12 months or more, estimated fair value	0
Total estimated fair value	1,033
Unrealized Losses
Less than 12 months, unrealized losses	(12)
12 months or more, unrealized losses	0
Total unrealized losses	(12)
State, county and municipal securities
Estimated Fair Value
Less than 12 months, estimated fair value	10,209
12 months or more, estimated fair value	0
Total estimated fair value	10,209
Unrealized Losses
Less than 12 months, unrealized losses	(299)
12 months or more, unrealized losses	0
Total unrealized losses	(299)
Corporate debt securities
Estimated Fair Value
Less than 12 months, estimated fair value	0	0
12 months or more, estimated fair value	1,350	1,380
Total estimated fair value	1,350	1,380
Unrealized Losses
Less than 12 months, unrealized losses	0	0
12 months or more, unrealized losses	(150)	(120)
Total unrealized losses	(150)	(120)
SBA pool securities
Estimated Fair Value
Less than 12 months, estimated fair value	32,988	1,312
12 months or more, estimated fair value	2,372	2,572
Total estimated fair value	35,360	3,884
Unrealized Losses
Less than 12 months, unrealized losses	(871)	(6)
12 months or more, unrealized losses	(58)	(63)
Total unrealized losses	(929)	(69)
Mortgage-backed securities
Estimated Fair Value
Less than 12 months, estimated fair value	242,704	5,514
12 months or more, estimated fair value	1	1
Total estimated fair value	242,705	5,515
Unrealized Losses
Less than 12 months, unrealized losses	(3,863)	(6)
12 months or more, unrealized losses	0	0
Total unrealized losses	$ (3,863)	$ (6)