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Accumulated Other Comprehensive Income (Loss) | 9 Months Ended
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Sep. 30, 2023
Equity [Abstract] |
Accumulated Other Comprehensive Income (Loss) | Accumulated Other Comprehensive Income (Loss)The following presents the changes in accumulated other comprehensive income (loss) for the three and nine months ended September 30, 2023 and 2022:
| Three Months Ended September 30,
| 2023 |  | 2022
(in thousands) | Pension and Other Postretirement Benefits |  | Net Unrealized Gains (Losses) on Available-for-Sale Securities |  | Total |  | Pension and Other Postretirement Benefits |  | Net Unrealized Gains (Losses) on Available-for-Sale Securities |  | Total
Balance, Beginning of Period | $ | 1,281 |  |  | $ | (400) |  |  | $ | 881 |  |  | $ | (6,621) |  |  | $ | (292) |  |  | $ | (6,913) |
Other Comprehensive Loss Before Reclassifications, net of tax | (275) |  |  | (17) |  |  | (292) |  |  | — |  |  | (172) |  |  | (172) |
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) | 585 |  | (1) | — |  | (2) | 585 |  |  | 106 |  | (1) | 1 |  | (2) | 107 |
Total Other Comprehensive Income (Loss) | 310 |  |  | (17) |  |  | 293 |  |  | 106 |  |  | (171) |  |  | (65) |
Balance, End of Period | $ | 1,591 |  |  | $ | (417) |  |  | $ | 1,174 |  |  | $ | (6,515) |  |  | $ | (463) |  |  | $ | (6,978) |
| Nine Months Ended September 30,
| 2023 |  | 2022
(in thousands) | Pension and Other Postretirement Benefits |  | Net Unrealized Gains (Losses) on Available-for-Sale Securities |  | Total |  | Pension and Other Postretirement Benefits |  | Net Unrealized Gains (Losses) on Available-for-Sale Securities |  | Total
Balance, Beginning of Period | $ | 1,334 |  |  | $ | (419) |  |  | $ | 915 |  |  | $ | (6,537) |  |  | $ | 13 |  |  | $ | (6,524) |
Other Comprehensive Income (Loss) Before Reclassifications, net of tax | (275) |  |  | 1 |  |  | (274) |  |  | — |  |  | (477) |  |  | (477) |
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) | 532 |  | (1) | 1 |  | (2) | 533 |  |  | 22 |  | (1) | 1 |  | (2) | 23 |
Total Other Comprehensive Income (Loss) | 257 |  |  | 2 |  |  | 259 |  |  | 22 |  |  | (476) |  |  | (454) |
Balance, End of Period | $ | 1,591 |  |  | $ | (417) |  |  | $ | 1,174 |  |  | $ | (6,515) |  |  | $ | (463) |  |  | $ | (6,978) |
(1) Included in the computation of net periodic pension and other postretirement benefit costs. See Note 7. |  |  |  |  |  |
(2) Included in other income (expense), net on the accompanying consolidated statements of income. |  |  |  |  |  |

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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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