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Accumulated Other Comprehensive Income | 9 Months Ended
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Dec. 31, 2023
Equity [Abstract] |
Accumulated Other Comprehensive Income | Accumulated Other Comprehensive Income All amounts recorded in other comprehensive income are related to the Company's post-retirement plans and interest rate swaps designated as cash flow hedges. The following table shows the changes in accumulated other comprehensive loss, net of tax:
| Three Months Ended December 31, 2023 | Nine Months Ended December 31, 2023
| Post-retirement plans | Derivatives designated as cash flow hedges | Totals | Post-retirement plans | Derivatives designated as cash flow hedges | Totals
Beginning of period | $ | 18,684 |  | $ | 13,208 |  | $ | 31,892 |  | $ | 19,450 |  | $ | 9,883 |  | $ | 29,333 |
Other comprehensive income (loss) before reclassifications(1) | — |  | (3,165) |  | (3,165) |  | — |  | 5,535 |  | 5,535 |
Amounts reclassified from accumulated other comprehensive income | (383) |  | (2,841) |  | (3,224) |  | (1,149) |  | (8,216) |  | (9,365) |
Net current-period other comprehensive loss | (383) |  | (6,006) |  | (6,389) |  | (1,149) |  | (2,681) |  | (3,830) |
End of period | $ | 18,301 |  | $ | 7,202 |  | $ | 25,503 |  | $ | 18,301 |  | $ | 7,202 |  | $ | 25,503 |
(1) Changes in other comprehensive income before reclassification for derivatives designated as cash flow hedges are recorded net of ta x benefit (expense) of $1.1 million and $(2.0) million for the three and nine months ended December 31, 2023, respectively. The tax impact of other comprehensive income before reclassification for post-retirement plans for the three and nine months ended December 31, 2023 was immaterial.
| Three Months Ended December 31, 2022 | Nine Months Ended December 31, 2022
| Post-retirement plans | Derivatives designated as cash flow hedges | Totals | Post-retirement plans | Derivatives designated as cash flow hedges | Totals
Beginning of period | $ | 8,807 |  | $ | 13,334 |  | $ | 22,141 |  | $ | 8,811 |  | $ | (226) |  | $ | 8,585 |
Other comprehensive income before reclassifications(2) | 2 |  | 1,155 |  | 1,157 |  | — |  | 12,337 |  | 12,337 |
Amounts reclassified from accumulated other comprehensive income (loss) | (2) |  | (1,217) |  | (1,219) |  | (4) |  | 1,161 |  | 1,157 |
Net current-period other comprehensive (loss) income | — |  | (62) |  | (62) |  | (4) |  | 13,498 |  | 13,494 |
End of period | $ | 8,807 |  | $ | 13,272 |  | $ | 22,079 |  | $ | 8,807 |  | $ | 13,272 |  | $ | 22,079 |
(2) Changes in other comprehensive income before reclassification for derivatives designated as cash flow hedges are recorded net of tax expense of $0.4 million and $4.4 million for the three and nine months ended December 31, 2022. The tax impact of other comprehensive income before reclassification for post-retirement plans for the three and nine months ended December 31, 2022 was immaterial.

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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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