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Related Party Transactions (Related Party Costs and Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Related party cost and expense:
Costs and Expenses, Related Party	$ 32,700	$ 900	$ 64,854	$ 63,422
Blackwater [Member]
Related party cost and expense:
Costs and Expenses, Related Party	32,717	32,854
Lease expenses | Blackwater [Member]
Related party cost and expense:
Costs and Expenses, Related Party	601	604	1,202	1,208
Lease expenses | Mercury [Member]
Related party cost and expense:
Costs and Expenses, Related Party	38	38	76	76
Printing expenses | Blackwater [Member]
Related party cost and expense:
Costs and Expenses, Related Party	1,445	1,455	2,880	2,558
Commission expenses | Blackwater [Member]
Related party cost and expense:
Costs and Expenses, Related Party	24,194	24,434	47,765	47,129
Commission expenses | Mercury [Member]
Related party cost and expense:
Costs and Expenses, Related Party	$ 6,439	$ 6,323	$ 12,931	$ 12,451

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- Definition

Related Party Cost And Expense Abstract

+ References

No definition available.

+ Details

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- Definition

Costs of sales and operating expenses for the period incurred from transactions with related parties.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

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