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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables) | 6 Months Ended
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Jun. 30, 2021
Equity [Abstract] |
Schedule of Components of Accumulated Other Comprehensive Loss | The following is a summary of the changes in accumulated other comprehensive income (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 April 1, 2021 |  | $ | (1,026) |  |  | $ | (6,726) |  |  | $ | (7,752) |
Other comprehensive income before reclassification |  | 3,893 |  |  | — |  |  | 3,893 |
Amounts reclassified from accumulated other comprehensive income |  | — |  |  | 1 |  |  | 1 |
Net current period other comprehensive income |  | 3,893 |  |  | 1 |  |  | 3,894 |
Balance at June 30, 2021 |  | $ | 2,867 |  |  | $ | (6,725) |  |  | $ | (3,858) |
|  | Unrealized Gains and Losses on Securities Available for Sale |  | Defined Benefit and Other Benefit Plans |  | Total |  |  |  |
Balance at April 1, 2020 |  | $ | 7,064 |  |  | $ | (7,146) |  |  | (82) |  |  |  |  |
Other comprehensive income before reclassification |  | 2,209 |  |  | — |  |  | 2,209 |  |  |  |  |
Amounts reclassified from accumulated other comprehensive income |  | — |  |  | 15 |  |  | 15 |  |  |  |  |
Net current period other comprehensive income |  | 2,209 |  |  | 15 |  |  | 2,224 |  |  |  |  |
Balance at June 30, 2020 |  | $ | 9,273 |  |  | $ | (7,131) |  |  | $ | 2,142 |  |  |  |  |
|  | Unrealized Gains and Losses on Securities Available for Sale |  | Defined Benefit and Other Benefit Plans |  | Total
Balance at January 1, 2021 |  | $ | 9,127 |  |  | $ | (6,726) |  |  | $ | 2,401 |
Other comprehensive income before reclassification |  | (6,260) |  |  | — |  |  | (6,260) |
Amounts reclassified from accumulated other comprehensive income |  | — |  |  | 1 |  |  | 1 |
Net current period other comprehensive income |  | (6,260) |  |  | 1 |  |  | (6,259) |
Balance at June 30, 2021 |  | $ | 2,867 |  |  | $ | (6,725) |  |  | $ | (3,858) |
|  | Unrealized Gains and Losses on Securities Available for Sale |  | Defined Benefit and Other Benefit Plans |  | Total |  |  |  |
Balance at January 1, 2020 |  | $ | 1,368 |  |  | $ | (7,167) |  |  | (5,799) |  |  |  |  |
Other comprehensive income before reclassification |  | 7,905 |  |  | — |  |  | 7,905 |  |  |  |  |
Amounts reclassified from accumulated other comprehensive income |  | — |  |  | 36 |  |  | 36 |  |  |  |  |
Net current period other comprehensive income |  | 7,905 |  |  | 36 |  |  | 7,941 |  |  |  |  |
Balance at June 30, 2020 |  | $ | 9,273 |  |  | $ | (7,131) |  |  | $ | 2,142 |  |  |  |  |
Schedule of Reclassification Out of Accumulated Other Comprehensive Income | The following is the reclassification out of accumulated other comprehensive income for the periods indicated (in thousands):
Details about Accumulated Other Comprehensive Income (Loss) Components |  | Three Months Ended June 30, |  | Affected Line Item in the Statement Where Net Income is Presented
|  | 2021 |  | 2020 |  |
Amortization of defined pension plan and other benefit plan items: |  |  |  |  |  |
Prior service costs (a) |  | $ | (55) |  |  | $ | (55) |  |  | Other components of net periodic pension and postretirement benefits
Actuarial losses (a) |  | 57 |  |  | 77 |  |  | Other components of net periodic pension and postretirement benefits
Tax effect |  | (1) |  |  | (7) |  |  | Income tax expense
Net of tax |  | 1 |  |  | 15 |  |  |
Total reclassification for the period, net of tax |  | $ | 1 |  |  | $ | 15 |  |  |
(a) These accumulated other comprehensive income components are included in the computation of net periodic pension and other benefit plan costs (see Note 11 for additional information).
Details about Accumulated Other Comprehensive Income (Loss) Components |  | Six Months Ended June 30, |  | Affected Line Item in the Statement Where Net Income is Presented
|  | 2021 |  | 2020 |  |
Amortization of defined pension plan and other benefit plan items: |  |  |  |  |  |
Prior service costs (a) |  | $ | (110) |  |  | $ | (110) |  |  | Other components of net periodic pension and postretirement benefits
Actuarial losses (a) |  | 112 |  |  | 154 |  |  | Other components of net periodic pension and postretirement benefits
Tax effect |  | (1) |  |  | (8) |  |  | Income tax expense
Net of tax |  | 1 |  |  | 36 |  |  |
Total reclassification for the period, net of tax |  | $ | 1 |  |  | $ | 36 |  |  |
(a) These accumulated other comprehensive income components are included in the computation of net periodic pension and other benefit plan costs (see Note 11 for additional information).

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