Stock Plans - Summary of Treasury Share Transactions Under the Company's Stock Repurchase Program (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Equity, Class of Treasury Stock [Line Items]
Treasury shares at the beginning of period, Number of Shares	5,368,000
Treasury shares at the end of period, Number of Shares	5,368,000	5,368,000
New Stock Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Treasury shares at the beginning of period, Number of Shares	5,368,000	5,127,000
Treasury shares purchased, Number of Shares	0	241,000
Treasury shares at the end of period, Number of Shares	5,368,000	5,368,000
Treasury shares at the beginning of period, Amount	$ (76,794)	$ (74,405)
Treasury shares purchased, Amount	0	(2,389)
Treasury shares at the end of period, Amount	$ (76,794)	$ (76,794)