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Other Comprehensive Income (Loss) (Tables) | 12 Months Ended
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Dec. 31, 2023
Stockholders' Equity Note [Abstract] |
Schedule of tax effect allocated to each component of other comprehensive income (loss) | The tax effect allocated to each component of other comprehensive income (loss) were as follows:
December 31, 2023 | Before-Tax Amount | Tax (Expense) Benefit | Net of Tax
(In thousands) |  |  |
Available-for-sale debt securities: |  |  |
Change in net unrealized gain (loss) during the period | $ | 35,008 |  | $ | (8,578) |  | $ | 26,430 |
Reclassification adjustment for net realized loss on sale of available-for-sale debt securities included in net income | 69,984 |  | (17,146) |  | 52,838 |
Net unrealized gains (losses) | 104,992 |  | (25,724) |  | 79,268 |
Employee benefit plans: |  |  |
Net retirement plan gain (losses) | 4,516 |  | (1,106) |  | 3,410 |
Amortization of net retirement plan actuarial loss | 1,116 |  | (273) |  | 843 |
Amortization of net retirement plan prior service cost | 217 |  | (54) |  | 163 |
Employee benefit plans | 5,849 |  | (1,433) |  | 4,416 |
Other comprehensive income (loss) | $ | 110,841 |  | $ | (27,157) |  | $ | 83,684 |
December 31, 2022 | Before-Tax Amount | Tax (Expense) Benefit | Net of Tax
(In thousands) |  |  |
Available-for-sale debt securities: |  |  |
Change in net unrealized (loss) gain during the period | $ | (229,463) |  | $ | 56,223 |  | $ | (173,240) |
Reclassification adjustment for net realized loss on sale of available-for-sale debt securities included in net income | 11,916 |  | (2,919) |  | 8,997 |
Net unrealized losses | (217,547) |  | 53,304 |  | (164,243) |
Employee benefit plans: |  |  |
Net retirement plan gain (loss) | 12,761 |  | (3,127) |  | 9,634 |
Amortization of net retirement plan actuarial loss | 2,260 |  | (554) |  | 1,706 |
Amortization of net retirement plan prior service cost | 216 |  | (52) |  | 164 |
Employee benefit plans | 15,237 |  | (3,733) |  | 11,504 |
Other comprehensive (loss) income | $ | (202,310) |  | $ | 49,571 |  | $ | (152,739) |
December 31, 2021 | Before-Tax Amount | Tax (Expense) Benefit | Net of Tax
(In thousands) |  |  |
Available-for-sale debt securities: |  |  |
Change in net unrealized (loss) gain during the period | $ | (46,301) |  | $ | 11,340 |  | $ | (34,961) |
Reclassification adjustment for net realized gain on sale of available-for-sale debt securities included in net income | (275) |  | 67 |  | (208) |
Net unrealized losses | (46,576) |  | 11,407 |  | (35,169) |
Employee benefit plans: |  |  |
Net retirement plan gain (loss) | 11,785 |  | (2,887) |  | 8,898 |
Amortization of net retirement plan actuarial gain | 2,951 |  | (723) |  | 2,228 |
Amortization of net retirement plan prior service (cost) credit | 221 |  | (54) |  | 167 |
Employee benefit plans | 14,957 |  | (3,664) |  | $ | 11,293 |
Other comprehensive (loss) income | $ | (31,619) |  | $ | 7,743 |  | $ | (23,876) |
Schedule of accumulated other comprehensive income (loss) | The following table presents the activity in our accumulated other comprehensive loss for the periods indicated:
(In thousands) | Available-for- Sale Debt Securities | Employee Benefit Plans | Accumulated Other Comprehensive (Loss) Income
Balance at January 1, 2021 | $ | 20,609 |  | $ | (52,683) |  | $ | (32,074) |
Other comprehensive (loss) income | (35,169) |  | 11,293 |  | (23,876) |
Balance at December 31, 2021 | $ | (14,560) |  | $ | (41,390) |  | $ | (55,950) |
Balance at January 1, 2022 | (14,560) |  | (41,390) |  | (55,950) |
Other comprehensive (loss) income | (164,243) |  | 11,504 |  | (152,739) |
Balance at December 31, 2022 | $ | (178,803) |  | $ | (29,886) |  | $ | (208,689) |
Balance at January 1, 2023 | (178,803) |  | (29,886) |  | (208,689) |
Other comprehensive income (loss) | 79,268 |  | 4,416 |  | 83,684 |
Balance at December 31, 2023 | $ | (99,535) |  | $ | (25,470) |  | $ | (125,005) |
December 31, 2023 |  |
Details about Accumulated other Comprehensive Income (Loss) Components (In thousands) | Amount Reclassified from Accumulated Other Comprehensive (Loss)1 | Affected Line Item in the Statement Where Net Income is Presented
Available-for-sale debt securities: |  |
Unrealized gains and losses on available-for-sale debt securities | $ | (69,984) |  | Net (loss) gain on securities transactions
| 17,146 |  | Tax expense
| (52,838) |  | Net of tax
Employee benefit plans: |  |
Amortization of the following 2 |  |
Net retirement plan actuarial loss | (1,116) |  | Other operating expense
Net retirement plan prior service cost | (217) |  | Other operating expense
| (1,333) |  | Total before tax
| 327 |  | Tax benefit
| $ | (1,006) |  | Net of tax
December 31, 2022 |  |
Details about Accumulated other Comprehensive Income (Loss) Components (In thousands) | Amount Reclassified from Accumulated Other Comprehensive (Loss)1 | Affected Line Item in the Statement Where Net Income is Presented
Available-for-sale debt securities: |  |
Unrealized gains and losses on available-for-sale debt securities | $ | (11,916) |  | Net (loss) gain on securities transactions
| 2,919 |  | Tax expense
| (8,997) |  | Net of tax
Employee benefit plans: |  |
Amortization of the following 2 |  |
Net retirement plan actuarial loss | (2,260) |  | Other operating expense
Net retirement plan prior service cost | (216) |  | Other operating expense
| (2,476) |  | Total before tax
| 606 |  | Tax benefit
| $ | (1,870) |  | Net of tax
1 Amounts in parentheses indicate debits in income statement. 2 The accumulated other comprehensive income (loss) components are included in the computation of net periodic benefit cost (See Note 11 - "Employee Benefit Plans").

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