Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Sales Return Reserves [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 8,835	$ 10,530	$ 6,506
Additions Charged to Costs and Expenses	6,737	8,038	17,966
Deductions	(8,031)	(9,733)	(13,942)
Balance at End of Year	7,541	8,835	10,530
Allowance for Doubtful Accounts [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	3,303	6,295	11,823
Additions Charged to Costs and Expenses	3,573	855	1,467
Deductions	(3,974)	(3,847)	(6,995)
Balance at End of Year	2,902	3,303	6,295
Valuation Allowance on Deferred Tax Assets [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	1,840	2,288	2,003
Additions Charged to Costs and Expenses	112	0	285
Deductions	0	(448)	0
Balance at End of Year	$ 2,551	$ 1,840	$ 2,288