Stock Plans - Summary of Treasury Share Transactions Under the Company's Stock Repurchase Program (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Equity [Abstract]
Treasury shares at the beginning of period, Number of Shares	4,945,000	4,833,000
Treasury shares purchased, Number of Shares	182,000	112,000
Treasury shares at the end of period, Number of Shares	5,127,000	4,945,000
Treasury shares at the beginning of period, Amount	$ (72,343)	$ (71,438)
Treasury shares purchased, Amount	(2,062)	(905)
Treasury shares at the end of period, Amount	$ (74,405)	$ (72,343)