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Related Party Transactions (Related Party Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Related party transactions:
Management fee revenue	$ 9,621	$ 9,586	$ 19,203	$ 19,081
Blackwater [Member]
Related party transactions:
Management fee revenue	7,830	7,805	15,608	15,520
Mercury [Member]
Related party transactions:
Management fee revenue	$ 1,791	$ 1,781	$ 3,595	$ 3,561

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Related Party Revenue Abstract

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Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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