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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables) | 12 Months Ended
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Dec. 31, 2023
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax [Abstract] |
Schedule of Changes in Accumulated Other Comprehensive Income (Loss) | The following tables summarize the changes within each classification of accumulated other comprehensive income (loss) for the years ended December 31, 2023 and 2022, all shown net of tax:
(dollars in thousands) | Unrealized Gains and (Losses) on Available-for-Sales Securities |  | Defined Benefit Pension Items |  | Total
Balance at January 1, 2023 | $ | (188,154) |  |  | $ | (769) |  |  | $ | (188,923) |
Other comprehensive income (loss) before reclassification | 32,105 |  |  | (10) |  |  | 32,095 |
Amounts reclassified from accumulated other comprehensive income (loss) | 1,589 |  |  | 44 |  |  | 1,633 |
Net current period other comprehensive income (loss) | 33,694 |  |  | 34 |  |  | 33,728 |
Balance at December 31, 2023 | $ | (154,460) |  |  | $ | (735) |  |  | $ | (155,195) |
(dollars in thousands) | Unrealized Gains and (Losses) on Available-for-Sales Securities |  | Defined Benefit Pension Items |  | Total
Balance at January 1, 2022 | $ | 17,056 |  |  | $ | (963) |  |  | $ | 16,093 |
Other comprehensive income (loss) before reclassification | (206,392) |  |  | 86 |  |  | (206,306) |
Amounts reclassified from accumulated other comprehensive income (loss) | 1,182 |  |  | 108 |  |  | 1,290 |
Net current period other comprehensive income (loss) | (205,210) |  |  | 194 |  |  | (205,016) |
Balance at December 31, 2022 | $ | (188,154) |  |  | $ | (769) |  |  | $ | (188,923) |
Schedule of Reclassification Out of Accumulated Other comprehensive income | Reclassifications out of accumulated other comprehensive income (loss) for the years ended December 31, 2023, 2022 and 2021 are as follows:
Details about Accumulated Other Comprehensive Income Components | Amount Reclassified From Accumulated Other Comprehensive Income (Loss) |  | Affected Line Item in the Statement Where Net Income is Presented
2023 |  |  |
(dollars in thousands) |  |  |
Amortization of unrealized losses on held-to-maturity securities | $ | (1,987) |  |  | Interest income
Realized gains and (losses) on available-for-sale securities | (25) |  |  | Net securities gains (losses)
Tax effect | 423 |  |  | Income tax expense
Subtotal | (1,589) |  |  | Net of tax
Amortization of defined benefit pension items(1) | (59) |  |  | Salaries and employee benefits
Tax effect | 15 |  |  | Income tax expense
Subtotal | (44) |  |  | Net of tax
Total reclassifications for the period | $ | (1,633) |  |  | Net income
2022 |  |  |
(dollars in thousands) |  |  |
Amortization of unrealized losses on held-to-maturity securities | $ | (1,518) |  |  | Interest income
Realized gains and (losses) on available-for-sale securities | 21 |  |  | Net securities gains (losses)
Tax effect | 315 |  |  | Income tax expense
Subtotal | (1,182) |  |  | Net of tax
Amortization of defined benefit pension items(1) | (144) |  |  | Salaries and employee benefits
Tax effect | 36 |  |  | Income tax expense
Subtotal | (108) |  |  | Net of tax
Total reclassifications for the period | $ | (1,290) |  |  | Net income
2021 |  |  |
(dollars in thousands) |  |  |
Realized gains and (losses) on available-for-sale securities | $ | 797 |  |  | Net securities gains (losses)
Tax effect | (167) |  |  | Income tax expense
Subtotal | 630 |  |  | Net of tax
Amortization of defined benefit pension items(1) | (242) |  |  | Salaries and employee benefits
Tax effect | 60 |  |  | Income tax expense
Subtotal | (182) |  |  | Net of tax
Total reclassifications for the period | $ | 448 |  |  | Net income
(1)Included in the computation of net pension plan expense as more fully discussed in Note 10 – Pension and Other Postretirement Plans.

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