Revenue - Schedule of Revenues Disaggregated by Revenue Source (Detail) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2022	Apr. 03, 2021
Disaggregation Of Revenue [Line Items]
Revenues, net	$ 297,761	$ 331,796
Digital Subscription Revenues
Disaggregation Of Revenue [Line Items]
Revenues, net	191,482	206,062
Workshops + Digital Fees
Disaggregation Of Revenue [Line Items]
Revenues, net	65,503	73,758
Subscription Revenues, net
Disaggregation Of Revenue [Line Items]
Revenues, net	256,985	279,820
Product sales and other, net
Disaggregation Of Revenue [Line Items]
Revenues, net	$ 40,776	$ 51,976