Related Party Transactions (Related Party Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Related party transactions:
Management fee revenue	$ 10,080	$ 9,651	$ 28,496	$ 26,847
Revenue from related parties	10,080	9,651	28,496	26,847
Blackwater [Member]
Related party transactions:
Management fee revenue	7,170	6,972	22,726	21,580
Mercury [Member]
Related party transactions:
Management fee revenue	$ 2,910	$ 2,679	$ 5,770	$ 5,267

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

- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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+ Details