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COMPREHENSIVE INCOME (LOSS) - Components (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
COMPREHENSIVE INCOME (LOSS) |  |  |
Unrealized holding losses on available-for-sale debt securities | $ (69,828) | $ (8,669) | $ 10,504
Unrealized holding losses on available-for-sale debt securities, Income Tax Effect | 14,665 | 1,821 | (2,205)
Unrealized holding losses on available-for-sale debt securities, Net of Tax Amount | (55,163) | (6,848) | 8,299
Reclassification adjustment for (gains) realized in income | (20) | (24) | (169)
Reclassification adjustment for (gains) losses realized in income, Income Tax Effect | 4 | 5 | 35
Reclassification adjustment for (gains) losses realized in income. Net of Tax Amount | (16) | (19) | (134)
Other comprehensive loss from available-for-sale debt securities, Before-Tax Amount | (69,848) | (8,693) | 10,335
Other comprehensive loss on available-for-sale debt securities, Income tax effect | 14,669 | 1,826 | (2,170)
Other comprehensive loss from available-for-sale debt securities, Net-of-Tax Amount | (55,179) | (6,867) | 8,165
Changes from plan amendments and actuarial gains and losses, Before-Tax Amount | 389 | 140 | (49)
Changes from plan amendments and actuarial gains and losses, Income Tax Effect | (81) | (29) | 11
Changes from plan amendments and actuarial gains and losses, Net-of-Tax Amount | 308 | 111 | (38)
Amortization of prior service cost and net actuarial loss included in net periodic benefit cost, Before-Tax Amount | (42) | (17) | (29)
Amortization of prior service cost and net actuarial loss included in net periodic benefit cost, Income Tax Effect | 9 | 4 | 6
Amortization of prior service cost and net actuarial loss included in net periodic benefit cost, Net-of-Tax Amount | (33) | (13) | (23)
Other comprehensive income (loss) on pension and postretirement obligations | 347 | 123 | (78)
Other comprehensive income (loss) on unfunded retirement obligations, Income Tax Effect | (72) | (25) | 17
Other comprehensive income (loss) on unfunded retirement obligations, Net-of-Tax Amount | 275 | 98 | (61)
Other comprehensive (loss) income before income tax | (69,501) | (8,570) | 10,257
Total other comprehensive income (loss), Income Tax Effect | 14,597 | 1,801 | (2,153)
Total other comprehensive income (loss), Net-of-Tax Amount | $ (54,904) | $ (6,769) | $ 8,104

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