Segment Reporting (Details)	12 Months Ended
	Dec. 29, 2024 USD ($) segment	Dec. 31, 2023 USD ($)	Jan. 01, 2023 USD ($)
Segment Reporting
Number of reporting segments | segment	1
Net revenue	$ 315,887,000	$ 355,175,000	$ 439,652,000
Less:
Cost of revenue	185,639,000	206,949,000	248,206,000
Goodwill impairment	28,374,000	0	0
Depreciation and amortization	5,480,000	4,819,000	4,134,000
Interest expense	1,271,000	1,728,000	1,103,000
Income tax provision (benefit)	2,333,000	(1,676,000)	4,047,000
Net Income (Loss)	(55,286,000)	(19,334,000)	3,725,000
Operating segments | Single reportable segment
Segment Reporting
Net revenue	315,887,000	355,175,000	439,652,000
Less:
Cost of revenue	185,639,000	206,949,000	248,206,000
Employee expenses (excluding equity-based compensation expense)	53,056,000	53,791,000	60,601,000
Equity-based compensation expense	8,090,000	17,694,000	16,087,000
Advertising expenses	55,408,000	58,481,000	64,436,000
Goodwill impairment	28,374,000
Other net costs	$ 34,257,000	$ 35,264,000	$ 39,428,000
Segment Reporting, Other Segment Item, Composition, Description	Other net costs include professional services fees, other selling costs, other general and administrative costs, technology and software costs, facilities costs, interest income, non-operating income and expenses, and other immaterial expenses that do not align with the separately presented expense categories.	Other net costs include professional services fees, other selling costs, other general and administrative costs, technology and software costs, facilities costs, interest income, non-operating income and expenses, and other immaterial expenses that do not align with the separately presented expense categories.	Other net costs include professional services fees, other selling costs, other general and administrative costs, technology and software costs, facilities costs, interest income, non-operating income and expenses, and other immaterial expenses that do not align with the separately presented expense categories.
Depreciation and amortization	$ 2,745,000	$ 2,278,000	$ 2,019,000
Interest expense	1,271,000	1,728,000	1,103,000
Income tax provision (benefit)	2,333,000	(1,676,000)	4,047,000
Net Income (Loss)	$ (55,286,000)	$ (19,334,000)	$ 3,725,000