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Net Periodic Benefit Cost - Narrative (Details) $ in Thousands	3 Months Ended	6 Months Ended		12 Months Ended
	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Mar. 31, 2025 plan
Retirement Benefits [Abstract]
Number of employee benefit plans terminated | plan				1
Non-cash pension settlement	$ 23,201	$ 0	$ 23,201
Surplus from settlement of plan		5,104
Defined benefit plan, surplus from settlement of plan, expected to be utilized in the next twelve months		2,340
Defined benefit plan, expected future employer contributions		$ 4,099

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Defined Benefit Plan, Surplus From Settlement Of Plan

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- Definition

Defined Benefit Plan, Surplus From Settlement Of Plan, Expected To Be Utilized In The Next Twelve Months

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- Definition

Number Of Employee Benefit Plans Terminated

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- Definition

Amount of contribution expected to be received by defined benefit plan from employer in remainder of current fiscal year. Excludes contribution previously paid by employer in current fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 18
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480482/715-20-55-18

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-6

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- Definition

Amount of noncash expense (reversal of expense) for pension benefits. Excludes other postretirement benefits.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

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