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INVESTMENT SECURITIES - Held-to-Maturity Securities (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost $ 95,301 $ 96,379
Gross Unrealized Gains 9 7
Gross Unrealized Losses 18,127 19,607
Estimated Fair Value 77,183 76,779
Obligations of states and political subdivisions    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost 600 600
Gross Unrealized Gains 0 0
Gross Unrealized Losses 45 54
Estimated Fair Value 555 546
Mortgage-backed securities    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost 94,701 95,779
Gross Unrealized Gains 9 7
Gross Unrealized Losses 18,082 19,553
Estimated Fair Value $ 76,628 $ 76,233