Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Oct. 01, 2022	Sep. 30, 2023	Oct. 01, 2022
Income Statement [Abstract]
Net sales	$ 472,648	$ 540,566	$ 1,457,964	$ 1,616,769
Cost of sales	201,537	237,479	612,343	686,439
Gross profit	271,111	303,087	845,621	930,330
Operating expenses:
Sales and marketing	221,143	239,656	649,410	700,405
General and administrative	31,948	36,003	111,144	116,049
Research and development	12,633	14,786	42,521	46,908
Total operating expenses	265,724	290,445	803,075	863,362
Operating income	5,387	12,642	42,546	66,968
Interest expense, net	10,958	5,606	30,008	11,352
(Loss) Income before income taxes	(5,571)	7,036	12,538	55,616
Income tax (benefit) expense	(3,253)	2,003	2,637	13,576
Net (loss) income	$ (2,318)	$ 5,033	$ 9,901	$ 42,040
Basic net (loss) income per share:
Net (loss) income per share – basic (in dollars per share)	$ (0.10)	$ 0.23	$ 0.44	$ 1.87
Weighted-average shares – basic (in shares)	22,479,000	22,218,000	22,412,000	22,444,000
Diluted net (loss) income per share:
Net (loss) income per share – diluted (in dollars per share)	$ (0.10)	$ 0.22	$ 0.44	$ 1.83
Weighted-average shares – diluted (in shares)	22,479,000	22,573,000	22,558,000	22,959,000