SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands		12 Months Ended
		Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Movement in Valuation Allowances and Reserves [Roll Forward]
Expected merchandise returns		$ 5,300	$ 5,300	$ 4,600
Allowance for Sales Returns [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	[1]	899	752	653
Charged to Costs and Expenses	[1]	1,305	2,579	1,530
Deductions/Write-Offs	[1]	(1,352)	(2,432)	(1,431)
Balance at End of Period	[1]	852	899	752
Reserve for Credit Losses [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period		2,664	5,392	5,193
Charged to Costs and Expenses		29	462	277
Deductions/Write-Offs		(84)	(3,190)	(78)
Balance at End of Period		2,609	2,664	5,392
Valuation for Deferred Taxes [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period		1,335	1,270	1,270
Charged to Costs and Expenses		(270)	65	0
Deductions/Write-Offs		0	0	0
Balance at End of Period		$ 1,065	$ 1,335	$ 1,270

[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 $5.3 million, $5.3 million, and $4.6 million as of March 31, 2019, 2018, and 2017, respectively.