SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands		12 Months Ended
		Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Movement in Valuation Allowances and Reserves [Roll Forward]
Expected merchandise returns		$ 4,600	$ 4,000	$ 3,800
Allowance for Sales Returns [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	[1]	653	613	592
Charged to Costs and Expenses	[1]	1,530	1,500	1,009
Deductions/Write-Offs	[1]	(1,431)	(1,460)	(988)
Balance at End of Period	[1]	752	653	613
Reserve for Credit Losses [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period		5,193	5,623	5,752
Charged to Costs and Expenses		277	(242)	125
Deductions/Write-Offs		(78)	(188)	(254)
Balance at End of Period		5,392	5,193	5,623
Valuation for Deferred Taxes [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period		1,270	1,223	1,287
Charged to Costs and Expenses		0	47	(64)
Deductions/Write-Offs		0	0	0
Balance at End of Period		$ 1,270	$ 1,270	$ 1,223

[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 $4.6 million, $4.0 million, and $3.8 million as of March 31, 2017, 2016, and 2015, respectively.