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SECURITIES - Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Fair Value |  |
Total | $ 0 |
Pass-through mortgage-backed securities ("MBS") issued by government sponsored entities ("GSEs") |  |
Fair Value |  |
Less than 12 Consecutive Months | 904 | $ 50,813
12 Consecutive Months or Longer | 205,299 | 190,427
Total | 206,203 | 241,240
Unrealized Losses |  |
Less than 12 Consecutive Months | 12 | 2,010
12 Consecutive Months or Longer | 33,294 | 29,524
Total | 33,306 | 31,534
US Treasury Securities [Member] |  |
Fair Value |  |
12 Consecutive Months or Longer | 229,873 | 227,256
Total | 229,873 | 227,256
Unrealized Losses |  |
12 Consecutive Months or Longer | 16,262 | 19,643
Total | 16,262 | 19,643
State and municipal obligations |  |
Fair Value |  |
Less than 12 Consecutive Months | 1,713 | 10,848
12 Consecutive Months or Longer | 26,218 | 22,681
Total | 27,931 | 33,529
Unrealized Losses |  |
Less than 12 Consecutive Months | 137 | 174
12 Consecutive Months or Longer | 2,777 | 2,847
Total | 2,914 | 3,021
US Government Agencies Debt Securities [Member] |  |
Fair Value |  |
12 Consecutive Months or Longer | 9,143 |
Total | 9,143 |
Unrealized Losses |  |
12 Consecutive Months or Longer | 857 |
Total | 857 |
Corporate Notes |  |
Fair Value |  |
Less than 12 Consecutive Months | 19,118 | 110,707
12 Consecutive Months or Longer | 121,969 | 50,116
Total | 141,087 | 160,823
Unrealized Losses |  |
Less than 12 Consecutive Months | 2,248 | 8,494
12 Consecutive Months or Longer | 26,214 | 8,581
Total | 28,462 | 17,075
Agency collateralized mortgage obligations ("CMOs") |  |
Fair Value |  |
Less than 12 Consecutive Months | 2,427 | 55,924
12 Consecutive Months or Longer | 248,193 | 220,413
Total | 250,620 | 276,337
Unrealized Losses |  |
Less than 12 Consecutive Months | 41 | 3,454
12 Consecutive Months or Longer | 55,970 | 46,603
Total | $ 56,011 | $ 50,057

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