Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021	Dec. 28, 2019
Income Statement [Abstract]
Net sales	$ 2,184,949	$ 1,856,555	$ 1,698,352
Cost of sales	866,102	700,555	646,429
Gross profit	1,318,847	1,156,000	1,051,923
Operating expenses:
Sales and marketing	905,359	771,195	766,922
General and administrative	161,412	158,999	137,956
Research and development	58,540	40,910	34,950
Total operating expenses	1,125,311	971,104	939,828
Operating income	193,536	184,896	112,095
Interest expense, net	6,245	8,924	11,587
Income before income taxes	187,291	175,972	100,508
Income tax expense	33,545	36,783	18,663
Net income	$ 153,746	$ 139,189	$ 81,845
Basic net income per share:
Net income - basic (in dollars per share)	$ 6.40	$ 5.03	$ 2.78
Weighted-average shares - basic (in shares)	24,038	27,665	29,472
Diluted net income per share:
Net income - diluted (in dollars per share)	$ 6.16	$ 4.90	$ 2.70
Weighted-average shares (in shares)	24,947	28,428	30,355