Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2022	Jul. 03, 2021	Jul. 02, 2022	Jul. 03, 2021
Income Statement [Abstract]
Net sales	$ 549,073	$ 484,316	$ 1,076,203	$ 1,052,572
Cost of sales	224,128	191,465	448,960	403,803
Gross profit	324,945	292,851	627,243	648,769
Operating expenses:
Sales and marketing	220,490	205,994	460,749	429,611
General and administrative	38,727	41,220	80,046	83,812
Research and development	15,817	15,916	32,122	29,202
Total operating expenses	275,034	263,130	572,917	542,625
Operating income	49,911	29,721	54,326	106,144
Interest expense, net	3,619	1,607	5,746	2,584
Income before income taxes	46,292	28,114	48,580	103,560
Income tax expense	11,359	5,864	11,573	14,676
Net income	$ 34,933	$ 22,250	$ 37,007	$ 88,884
Basic net income per share:
Net income per share – basic (in dollars per share)	$ 1.56	$ 0.91	$ 1.64	$ 3.57
Weighted-average shares – basic (in shares)	22,355,000	24,371,000	22,558,000	24,874,000
Diluted net income per share:
Net income per share – diluted (in dollars per share)	$ 1.54	$ 0.88	$ 1.60	$ 3.44
Weighted-average shares – diluted (in shares)	22,713,000	25,194,000	23,152,000	25,869,000