Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands		12 Months Ended
		Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Movement in Valuation Allowances and Reserves [Roll Forward]
Expected merchandise returns		$ 4,000	$ 3,800	$ 3,600
Allowance for Sales Returns [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	[1]	613	592	543
Charged to Costs and Expenses	[1]	1,500	1,009	1,079
Deductions/Write-Offs	[1]	(1,460)	(988)	(1,030)
Balance at End of Period	[1]	653	613	592
Reserve for Credit Losses [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period		5,623	5,752	5,129
Charged to Costs and Expenses		(242)	125	750
Deductions/Write-Offs		(188)	(254)	(127)
Balance at End of Period		5,193	5,623	5,752
Valuation for Deferred Taxes [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period		1,223	1,287	1,505
Charged to Costs and Expenses		47	(64)	(218)
Deductions/Write-Offs		0	0	0
Balance at End of Period		$ 1,270	$ 1,223	$ 1,287

[1] These amounts represent the gross profit effect of sales returns during the respective years. Expected merchandise returns after year-end for sales made before year-end were $4.0 million, $3.8 million, and $3.6 million as of March 31, 2016, 2015, and 2014, respectively.