CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Income Statement [Abstract]
Net sales	$ 1,790,147	$ 1,875,197	$ 1,817,057
Cost of sales	954,912	1,028,529	938,949
Gross profit	835,235	846,668	878,108
Selling, general and administrative expenses	837,154	684,541	653,689
(Loss) income from operations	(1,919)	162,127	224,419
Other expense (income), net:
Interest income	(778)	(420)	(207)
Interest expense	7,319	5,814	4,220
Other income, net	(1,474)	(152)	(733)
Total other expense, net	5,067	5,242	3,280
(Loss) income before income taxes	(6,986)	156,885	221,139
Income tax (benefit) expense	(12,696)	34,620	59,359
Net income	5,710	122,265	161,780
Other comprehensive (loss) income, net of tax:
Unrealized gain on foreign currency exchange rate hedges	704	461	450
Foreign currency translation adjustment	(6,598)	(550)	(18,875)
Total other comprehensive loss	(5,894)	(89)	(18,425)
Comprehensive (loss) income	$ (184)	$ 122,176	$ 143,355
Net income per share:
Basic (in dollars per share)	$ 0.18	$ 3.76	$ 4.70
Diluted (in dollars per share)	$ 0.18	$ 3.70	$ 4.66
Weighted-average common shares outstanding:
Basic (in shares)	32,000	32,556	34,433
Diluted (in shares)	32,355	33,039	34,733