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ACCUMULATED OTHER COMPREHENSIVE INCOME OR LOSS (Tables) | 12 Months Ended
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Dec. 31, 2023
Equity [Abstract] |
Summary of Changes in Accumulated Other Comprehensive Income or Loss by Component, Net of Tax | The following is a summary of the changes in accumulated other comprehensive income or loss by component, net of tax, for the periods indicated (in thousands):
|  | Unrealized Gains and Losses on Securities Available for Sale |  | Defined Benefit and Other Benefit Plans |  | Total
Balance at January 1, 2023 |  | $ | (71,296) |  |  | $ | (3,961) |  |  | $ | (75,257) |
Other comprehensive income (loss) before reclassification |  | 8,506 |  |  | 702 |  |  | 9,208 |
Amounts reclassified from accumulated other comprehensive income (loss) |  | (10) |  |  | 46 |  |  | 36 |
Net current period other comprehensive income (loss) |  | 8,496 |  |  | 748 |  |  | 9,244 |
Balance at December 31, 2023 |  | $ | (62,800) |  |  | $ | (3,213) |  |  | $ | (66,013) |
Balance at January 1, 2022 |  | $ | (2,495) |  |  | $ | (4,035) |  |  | $ | (6,530) |
Other comprehensive income (loss) before reclassification |  | (68,801) |  |  | 47 |  |  | (68,754) |
Amounts reclassified from accumulated other comprehensive income (loss) |  | — |  |  | 27 |  |  | 27 |
Net current period other comprehensive income (loss) |  | (68,801) |  |  | 74 |  |  | (68,727) |
Balance at December 31, 2022 |  | $ | (71,296) |  |  | $ | (3,961) |  |  | $ | (75,257) |
Reclassification Out of Accumulated Other Comprehensive Income | The following is the reclassification out of accumulated other comprehensive income (loss) for the periods indicated (in thousands):
Details about Accumulated Other Comprehensive Income (Loss) Components |  | Year Ended December 31, |  | Affected Line Item in the Statement Where Net Income is Presented
| 2023 |  | 2022 |  |  |
Unrealized gains and losses on securities available for sale: |  |  |  |  |  |
Realized gains (losses) on securities available for sale |  | $ | (14) |  |  | $ | — |  |  |  |  | Net gains (losses) on securities transactions
Tax effect |  | 4 |  |  | — |  |  |  |  | Income tax expense
Net of tax |  | (10) |  |  | — |  |  |  |  |
Amortization of defined pension plan and other benefit plan items: |  |  |  |  |  |
Actuarial losses (a) |  | 63 |  |  | 38 |  |  |  |  | Other components of net periodic pension and postretirement benefits
Tax effect |  | (16) |  |  | (11) |  |  |  |  | Income tax expense
Net of tax |  | 47 |  |  | 27 |  |  |  |  |
Total reclassification for the period, net of tax |  | $ | 37 |  |  | $ | 27 |  |  |  |  |
(a) These accumulated other comprehensive income (loss) components are included in the computation of net periodic pension and other benefit plan costs (see Note 13 for additional information).

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