Earnings per Share and Stock Plans - Restricted Stock Units and Performance Share Tables (Details) - $ / shares	12 Months Ended
Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Restricted Stock Units (RSUs) \| Long Term Incentive Plans
Shares
Unvested, beginning balance (in shares)	250,912	247,225	244,736
Granted (in shares)	136,870	159,816	161,582
Vested (in shares)	(127,514)	(145,862)	(132,953)
Forfeited (in shares)	(12,632)	(10,267)	(26,140)
Unvested, ending balance (in shares)	247,636	250,912	247,225
Weighted-average Grant Date Fair Value per share
Unvested, beginning balance (in dollars per share)	$ 35.91	$ 37.02	$ 39.86
Granted (in dollars per share)	39.71	37.57	31.61
Vested (in dollars per share)	38.60	39.21	35.44
Forfeited (in dollars per share)	40.56	41.61	38.15
Unvested, ending balance (in dollars per share)	$ 36.38	$ 35.91	$ 37.02
Performance Shares
Shares
Unvested, beginning balance (in shares)	178,900	179,005	138,032
Granted (in shares)	123,401	73,453	67,606
Vested (in shares)	(19,960)	(39,720)
Forfeited (in shares)	(27,485)	(33,838)	(26,633)
Unvested, ending balance (in shares)	254,856	178,900	179,005
Weighted-average Grant Date Fair Value per share
Unvested, beginning balance (in dollars per share)	$ 36.13	$ 34.49	$ 35.35
Granted (in dollars per share)	37.44	36.58	33.03
Vested (in dollars per share)	53.56	35.95
Forfeited (in dollars per share)	50.02	28.66	35.26
Unvested, ending balance (in dollars per share)	$ 33.90	$ 36.13	$ 34.49

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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