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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Components of Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Net change in fair value of investment securities: |  |
Amortization of unrealized losses on investment securities transferred to held-to-maturity at fair value | $ (1,552) | $ (1,638)
Other comprehensive income (loss) | 14,746 | (2,344)
Net change in fair value of investment securities: |  |
Other comprehensive income (loss) | 3,889 | (617)
Net change in fair value of investment securities: |  |
Net change in fair value of investment securities | 11,255 | (5,180)
Total other comprehensive income (loss), net of tax | 10,857 | (1,727)
Net unrealized gains on investment securities |  |
Net change in fair value of investment securities: |  |
Net unrealized gains (losses) on AFS investment securities arising during the period | 15,287 | (7,035)
Amortization of unrealized losses on investment securities transferred to held-to-maturity at fair value | 1,552 | 1,638
Net change in fair value of investment securities | 16,839 | (5,397)
Net change in fair value of investment securities: |  |
Net unrealized gains (losses) on AFS investment securities arising during the period | 4,032 | (1,855)
Less: Amortization of unrealized losses on investment securities transferred to HTM | 409 | 432
Net change in fair value of investment securities | 4,441 | (1,423)
Net change in fair value of investment securities: |  |
Net unrealized gains (losses) on investment securities arising during the period | 11,255 | (5,180)
Amortization of unrealized losses on investment securities transferred to held-to-maturity | (1,143) | (1,206)
Net change in fair value of investment securities | 12,398 | (3,974)
Gain (Loss) On Unrealized Losses On Derivative Instruments |  |
Net change in fair value of investment securities: |  |
Net unrealized gains arising during the period | (2,093) | 3,053
Other comprehensive income (loss) | (2,093) | 3,053
Net change in fair value of investment securities: |  |
Net unrealized gains (losses) arising during the period | (552) | 806
Other comprehensive income (loss) | (552) | 806
Net change in fair value of investment securities: |  |
Other comprehensive income (loss) before reclassifications | (1,541) | 2,247
Total other comprehensive income (loss), net of tax | (1,541) | 2,247
SERP |  |
Net change in fair value of investment securities: |  |
Other comprehensive income (loss) before reclassifications | 0 | 0
Total other comprehensive income (loss), net of tax | $ 0 | $ 0

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