Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Mar. 31, 2022
Supplemental Cash Flow Information [Abstract]
Establishment of lease liability in exchange for right of use asset	$ 1,123	$ 7,950
Non-cash financing activities:
Dividends declared but not paid	14,803	12,913	$ 12,947
Member distributions declared but not paid	10,754	12,211
Establishment of net deferred tax assets related to offerings	$ 0	$ 19,783