Restructuring Costs (Reconciliation Of Company's Liability For The Restructuring Costs) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 1,434	$ 0	$ 2,150
Payments and write-offs for restructuring	1,181	0	4,133
Balance	253	0	0	$ 1,983
Employee Termination Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Employee termination benefits	1,615	0	2,174
Payments and write-offs for restructuring	1,362	0	3,544
Balance	253	0	0	1,370
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Other restructuring costs	(181)	0	(24)
Payments and write-offs for restructuring	(181)	0	589
Balance	$ 0	$ 0	$ 0	$ 613