Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Income Statement [Abstract]
Net sales	$ 960,171	$ 934,978	$ 743,203
Cost of sales	358,416	338,432	272,858
Gross profit	601,755	596,546	470,345
Operating expenses:
Sales and marketing	439,156	398,205	317,502
General and administrative	62,840	66,617	58,106
Research and development	9,478	6,194	4,175
CEO transition (benefit) costs	(534)	5,595	0
Asset impairment charges	127	148	109
Total operating expenses	511,067	476,759	379,892
Operating income	90,688	119,787	90,453
Other income (expense), net	323	218	(33)
Income before income taxes	91,011	120,005	90,420
Income tax expense	30,930	41,911	29,942
Net income	$ 60,081	$ 78,094	$ 60,478
Basic net income per share:
Net income per share – basic	$ 1.10	$ 1.41	$ 1.10
Weighted-average shares – basic	54,866	55,516	55,081
Diluted net income per share:
Net income per share – diluted	$ 1.08	$ 1.37	$ 1.07
Weighted-average shares – diluted	55,803	57,076	56,432