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COMPREHENSIVE INCOME (LOSS) - Components (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
COMPREHENSIVE INCOME (LOSS) |  |  |  |
Unrealized holding gains (losses) on available-for-sale debt securities, Before-Tax Amount | $ 5,979 | $ 13,829 | $ 13,757 | $ 10,243
Unrealized holding (losses) gains on available-for-sale debt securities, Income Tax Effect | (1,314) | (2,515) | (3,025) | (1,761)
Unrealized holding (losses) gains on available-for-sale debt securities, Net of Tax Amount | 4,665 | 11,314 | 10,732 | 8,482
Reclassification adjustment for (gains) losses realized in income, Before-Tax Amount | 0 | 0 | 0 | 0
Reclassification adjustment for gains (losses) realized in income, Income Tax Effect | 0 | 0 | 0 | 0
Reclassification adjustment for (gains) losses realized in income. Net of Tax Amount | 0 | 0 | 0 | 0
Other comprehensive (loss) income from available-for-sale debt securities, Before-Tax Amount | 5,979 | 13,829 | 13,757 | 10,243
Other comprehensive loss (income) from available-for-sale debt securities, Income tax effect | (1,314) | (2,515) | (3,025) | (1,761)
Other comprehensive (loss) income from available-for-sale debt securities, Net-of-Tax Amount | 4,665 | 11,314 | 10,732 | 8,482
Changes from plan amendments and actuarial gains and losses, Before-Tax Amount | 0 | 0 | 69 | 394
Changes from plan amendments and actuarial gains and losses, Income Tax Effect |  |  | (15) | (83)
Changes from plan amendments and actuarial gains and losses, Net-of-Tax Amount |  |  | 54 | 311
Amortization of prior service cost and net actuarial loss and curtailment gain included in net periodic benefit cost, Before-Tax Amount | (21) | (22) | (65) | (532)
Amortization of prior service cost and net actuarial loss and curtailment gain included in net periodic benefit cost, Income Tax Effect | 4 | 5 | 14 | 112
Amortization of prior service cost and net actuarial loss and curtailment gain included in net periodic benefit cost, Net-of-Tax Amount | (17) | (17) | (51) | (420)
Other comprehensive loss on unfunded retirement obligations, Before-Tax Amount | (21) | (22) | 4 | (138)
Other comprehensive loss on unfunded retirement obligations, Income Tax Effect | 4 | 5 | (1) | 29
Other comprehensive loss on unfunded retirement obligations, Net-of-Tax Amount | (17) | (17) | 3 | (109)
Total other comprehensive (income) loss, Before-Tax Amount | 5,958 | 13,807 | 13,761 | 10,105
Total other comprehensive income (loss), Income Tax Effect | (1,310) | (2,510) | (3,026) | (1,732)
Total other comprehensive income (loss), Net-of-Tax Amount | $ 4,648 | $ 11,297 | $ 10,735 | $ 8,373

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