Related Party Transactions (Related Party Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Mar. 31, 2022
Related party assets:
Related party assets	$ 75,549	$ 47,851
Blackwater [Member]
Related party assets:
Notes receivable	64,055	41,364
Mercury [Member]
Related party assets:
Notes receivable	11,961	5,708
Insurance Group [Member]
Related party assets:
Amount due to related parties	$ (467)	$ 779

For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.

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+ Details