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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

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