Related Party Transactions (Related Party Costs and Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024
Related party cost and expense:
Costs and Expenses, Related Party	$ 26,200	$ 26,500	$ 91,008	$ 89,953
Blackwater [Member]
Related party cost and expense:
Costs and Expenses, Related Party	26,153	26,531
Lease expenses | Blackwater [Member]
Related party cost and expense:
Costs and Expenses, Related Party	600	604	1,802	1,812
Lease expenses | Mercury [Member]
Related party cost and expense:
Costs and Expenses, Related Party	38	38	114	114
Printing expenses | Blackwater [Member]
Related party cost and expense:
Costs and Expenses, Related Party	1,756	1,176	4,636	3,734
Commission expenses | Blackwater [Member]
Related party cost and expense:
Costs and Expenses, Related Party	18,611	19,409	66,376	66,538
Commission expenses | Mercury [Member]
Related party cost and expense:
Costs and Expenses, Related Party	$ 5,148	$ 5,304	$ 18,080	$ 17,755