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Other Comprehensive Income (Loss) | 3 Months Ended
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Mar. 31, 2024
Equity [Abstract] |
Other Comprehensive Income (Loss) | Other Comprehensive Income (Loss) (In Thousands) Changes in the components of other comprehensive income (loss), net of tax, were as follows for the periods presented:
| Pre-Tax |  | Tax Expense (Benefit) |  | Net of Tax
Three months ended March 31, 2024 |  |  |  |  |
Securities available for sale: |  |  |  |  |
Unrealized holding losses on securities | $ | (6,192) |  |  | $ | (1,558) |  |  | $ | (4,634) |
Amortization of unrealized holding losses on securities transferred to the held to maturity category | 3,275 |  |  | 837 |  |  | 2,438 |
Total securities available for sale | (2,917) |  |  | (721) |  |  | (2,196) |
Derivative instruments: |  |  |  |  |
Unrealized holding losses on derivative instruments | (765) |  |  | (195) |  |  | (570) |
Total derivative instruments | (765) |  |  | (195) |  |  | (570) |
Defined benefit pension and post-retirement benefit plans: |  |  |  |  |
Amortization of net actuarial loss recognized in net periodic pension cost | 106 |  |  | 27 |  |  | 79 |
Total defined benefit pension and post-retirement benefit plans | 106 |  |  | 27 |  |  | 79 |
Total other comprehensive loss | $ | (3,576) |  |  | $ | (889) |  |  | $ | (2,687) |
Three months ended March 31, 2023 |  |  |  |  |
Securities available for sale: |  |  |  |  |
Unrealized holding gains on securities | $ | 20,714 |  |  | $ | 5,183 |  |  | $ | 15,531 |
Amortization of unrealized holding losses on securities transferred to the held to maturity category | 3,128 |  |  | 800 |  |  | 2,328 |
Total securities available for sale | 23,842 |  |  | 5,983 |  |  | 17,859 |
Derivative instruments: |  |  |  |  |
Unrealized holding losses on derivative instruments | (1,656) |  |  | (424) |  |  | (1,232) |
Total derivative instruments | (1,656) |  |  | (424) |  |  | (1,232) |
Defined benefit pension and post-retirement benefit plans: |  |  |  |  |
Amortization of net actuarial loss recognized in net periodic pension cost | 116 |  |  | 30 |  |  | 86 |
Total defined benefit pension and post-retirement benefit plans | 116 |  |  | 30 |  |  | 86 |
Total other comprehensive income | $ | 22,302 |  |  | $ | 5,589 |  |  | $ | 16,713 |
The accumulated balances for each component of other comprehensive loss, net of tax, were as follows as of the dates presented:
| March 31, 2024 |  | December 31, 2023
Unrealized losses on securities | $ | (165,680) |  |  | $ | (163,484) |
Unrealized gains on derivative instruments | 16,481 |  |  | 17,051 |
Unrecognized losses on defined benefit pension and post-retirement benefit plans obligations | (7,744) |  |  | (7,823) |
Total accumulated other comprehensive loss | $ | (156,943) |  |  | $ | (154,256) |

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483586/944-220-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483589/942-220-S99-1 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//220/tableOfContent + Details
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