Goodwill and Other Intangibles Change in Goodwill Balance (Details) - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Balance at beginning of year	$ 173,051	$ 126,826
Foreign currency translation adjustment	(87)	84
Balance at end of period	$ 172,964	$ 126,910