Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Income Statement [Abstract]
Net sales	$ 426,617	$ 472,648	$ 1,305,479	$ 1,457,964
Cost of sales	167,089	201,537	528,287	612,343
Gross profit	259,528	271,111	777,192	845,621
Operating expenses:
Sales and marketing	205,480	221,143	596,392	649,410
General and administrative	33,070	31,948	111,722	111,144
Research and development	10,583	12,633	34,602	42,521
Restructuring costs	1,963	0	14,382	0
Total operating expenses	251,096	265,724	757,098	803,075
Operating income	8,432	5,387	20,094	42,546
Interest expense, net	12,057	10,958	36,626	30,008
(Loss) income before income taxes	(3,625)	(5,571)	(16,532)	12,538
Income tax (benefit) expense	(489)	(3,253)	(863)	2,637
Net (loss) income	$ (3,136)	$ (2,318)	$ (15,669)	$ 9,901
Basic net (loss) income per share:
Net (loss) income per share – basic (in dollars per share)	$ (0.14)	$ (0.10)	$ (0.69)	$ 0.44
Weighted-average shares – basic (in shares)	22,643	22,479	22,588	22,412
Diluted net (loss) income per share:
Net (loss) income per share – diluted (in dollars per share)	$ (0.14)	$ (0.10)	$ (0.69)	$ 0.44
Weighted-average shares – diluted (in shares)	22,643	22,479	22,588	22,558