Other Noncurrent Assets (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Other Noncurrent Assets [Abstract]
Capitalized software developed for internal use, accumulated amortization	$ 71,356	$ 5,290
Capitalized software developed for internal use, amortization expense	$ 71,473