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INVESTMENT SECURITIES - Available for sale securities (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2023 | Dec. 31, 2022
AVAILABLE-FOR-SALE SECURITIES: |  |
Amortized Cost | $ 546,780 | $ 553,214
Gross Unrealized Gains | 511 | 119
Gross Unrealized Losses | 53,961 | 62,741
Fair Value | 493,330 | 490,592
Agency mortgage-backed securities |  |
AVAILABLE-FOR-SALE SECURITIES: |  |
Amortized Cost | 323,471 | 327,266
Gross Unrealized Losses | 36,083 | 40,784
Fair Value | 287,388 | 286,482
Agency collateralized mortgage obligations |  |
AVAILABLE-FOR-SALE SECURITIES: |  |
Amortized Cost | 89,673 | 90,205
Gross Unrealized Losses | 9,914 | 11,731
Fair Value | 79,759 | 78,474
States and political subdivisions securities |  |
AVAILABLE-FOR-SALE SECURITIES: |  |
Amortized Cost | 59,533 | 60,667
Gross Unrealized Gains | 379 | 119
Gross Unrealized Losses | 2,006 | 3,291
Fair Value | 57,906 | 57,495
Small Business Administration securities |  |
AVAILABLE-FOR-SALE SECURITIES: |  |
Amortized Cost | 74,103 | 75,076
Gross Unrealized Gains | 132 |
Gross Unrealized Losses | 5,958 | 6,935
Fair Value | $ 68,277 | $ 68,141

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