Condensed Consolidated Statements of Comprehensive (Loss) Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Income Statement [Abstract]
Net sales	$ 294,716	$ 263,760
Cost of sales	150,456	140,201
Gross profit	144,260	123,559
Selling, general and administrative expenses	144,668	120,907
(Loss) income from operations	(408)	2,652
Other expense (income), net:
Interest income	(65)	(26)
Interest expense	516	339
Other, net	(117)	(171)
Total other expense	334	142
(Loss) income before income taxes	(742)	2,510
Income tax expense	1,943	1,503
Net (loss) income	(2,685)	1,007
Other comprehensive income (loss), net of tax:
Unrealized (loss) income on foreign currency hedging	(273)	1,530
Foreign currency translation adjustment	873	(674)
Total other comprehensive income	600	856
Comprehensive (loss) income	$ (2,085)	$ 1,863
Net (loss) income per share:
Basic (in dollars per share)	$ (0.08)	$ 0.03
Diluted (in dollars per share)	$ (0.08)	$ 0.03
Weighted-average common shares outstanding:
Basic (in shares)	34,621	34,404
Diluted (in shares)	34,621	34,788