CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
Net sales	$ 276,839	$ 250,594
Cost of sales	146,820	135,629
Gross profit	130,019	114,965
Selling, general and administrative expenses	161,436	154,379
Loss from operations	(31,417)	(39,414)
Interest income	(2,866)	(1,586)
Interest expense	1,146	1,234
Other income, net	(92)	(11)
Total other income, net	(1,812)	(363)
Loss before income taxes	(29,605)	(39,051)
Income tax benefit	(10,254)	(8,644)
Net loss	(19,351)	(30,407)
Other comprehensive (loss) income, net of tax
Unrealized (loss) gain on cash flow hedges	(317)
Unrealized (loss) gain on cash flow hedges		5,323
Foreign currency translation gain (loss)	68	(7,463)
Total other comprehensive loss	(249)	(2,140)
Comprehensive loss	$ (19,600)	$ (32,547)
Net loss per share
Basic (in dollars per share)	$ (0.67)	$ (1.00)
Diluted (in dollars per share)	$ (0.67)	$ (1.00)
Weighted-average common shares outstanding
Basic (in shares)	29,089	30,423
Diluted (in shares)	29,089	30,423