Schedule II Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Sales Return Reserve
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	$ 4,191	$ 4,759	$ 5,520
Additions	6,595	7,094	4,969
Deductions	(7,193)	(7,662)	(5,730)
Balance at End of Year	3,593	4,191	4,759
Allowance for Doubtful Accounts
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	3,549	6,054	3,876
Additions	2,834	3,367	5,644
Deductions	(2,178)	(5,872)	(3,466)
Balance at End of Year	4,205	3,549	6,054
Valuation Allowance for Deferred Taxes
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	5,452	3,563	2,893
Additions	877	327	708
Acquisition Related Additions	0	1,590	0
Deductions	(314)	(28)	(38)
Balance at End of Year	$ 6,015	$ 5,452	$ 3,563