INVESTMENT SECURITIES - Schedule of Held-to-Maturity Securities with Unrealized Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Estimated Fair Value
Less than 12 months, estimated fair value	$ 60,359	$ 73,202
12 months or more, estimated fair value	47,455	0
Total estimated fair value	107,814	73,202
Unrealized Losses
Less than 12 months, unrealized losses	(9,447)	(1,648)
12 months or more, unrealized losses	(12,953)	0
Total unrealized losses	(22,400)	(1,648)
State, county and municipal securities
Estimated Fair Value
Less than 12 months, estimated fair value	24,323	3,707
12 months or more, estimated fair value	750	0
Total estimated fair value	25,073	3,707
Unrealized Losses
Less than 12 months, unrealized losses	(6,382)	(198)
12 months or more, unrealized losses	(450)	0
Total unrealized losses	(6,832)	(198)
Mortgage-backed securities
Estimated Fair Value
Less than 12 months, estimated fair value	36,036	69,495
12 months or more, estimated fair value	46,705	0
Total estimated fair value	82,741	69,495
Unrealized Losses
Less than 12 months, unrealized losses	(3,065)	(1,450)
12 months or more, unrealized losses	(12,503)	0
Total unrealized losses	$ (15,568)	$ (1,450)