Related Party Transactions (Related Party Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Related party transactions:
Management fee revenue	$ 10,138	$ 10,080	$ 28,582	$ 28,496
Blackwater [Member]
Related party transactions:
Management fee revenue	7,135	7,170	22,585	22,726
Mercury [Member]
Related party transactions:
Management fee revenue	$ 3,003	$ 2,910	$ 5,997	$ 5,770

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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+ Details