INVESTMENT SECURITIES - Amortized Cost and Estimated Fair Value of Securities Held-to-Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 91,454	$ 79,850
Gross Unrealized Gains	0	4
Gross Unrealized Losses	(8,965)	(1,648)
Estimated Fair Value	82,489	78,206
State, county and municipal securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	13,905	8,905
Gross Unrealized Gains	0	4
Gross Unrealized Losses	(2,227)	(198)
Estimated Fair Value	11,678	8,711
Mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	77,549	70,945
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(6,738)	(1,450)
Estimated Fair Value	$ 70,811	$ 69,495