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Pension and Other Benefit Plans (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Target		100.00%
Actual		100.00%	100.00%
Pension Plans
Defined Benefit Plan, Estimated Future Benefit Payments [Abstract]
2021		$ 23,615
2022		23,838
2023		23,729
2024		23,638
2025		23,612
2027-2031		$ 114,262
Pension Plans | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Actual		45.00%	33.00%
Pension Plans | Equity securities | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target	35.00%
Pension Plans | Equity securities | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target	45.00%
Pension Plans | Fixed income securities
Defined Benefit Plan Disclosure [Line Items]
Actual		55.00%	67.00%
Pension Plans | Fixed income securities | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target	65.00%
Pension Plans | Fixed income securities | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target	55.00%
Postretirement Benefit Plans
Defined Benefit Plan, Estimated Future Benefit Payments [Abstract]
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months		$ 195
2022		179
2023		166
2024		152
2025		135
2027-2031		$ 454

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Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
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Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year.

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Amount of benefit for defined benefit plan expected to be paid in fourth fiscal year following current fiscal year.

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Amount of benefit for defined benefit plan expected to be paid in second fiscal year following current fiscal year.

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Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

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