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Related Party - Additional Information (Detail) - USD ($) $ in Thousands			3 Months Ended	12 Months Ended
	Dec. 15, 2019	Oct. 18, 2015	Jun. 27, 2020	Jan. 01, 2022	Jan. 02, 2021	Dec. 28, 2019
Related Party Transaction [Line Items]
Initial agreement term		5 years
Fully vested option to purchase shares of common stock				354,000	0
Dividend yield				0.00%	0.00%
Stock options exercised				606,000
Ms. Winfrey
Related Party Transaction [Line Items]
Fully vested option to purchase shares of common stock	3,276,000
Dividend yield			0.00%
Volatility rate			63.68%
Risk-free interest rate			0.41%
Accounts payable to related parties				$ 120	$ 76
Number of shares purchased from related party				1,542,000	2,782,000
Stock options exercised				581,000	1,118,000
Ms. Winfrey \| Selling, General and Administrative Expenses
Related Party Transaction [Line Items]
Compensation expense			$ 32,686
Ms. Winfrey and her related entities
Related Party Transaction [Line Items]
Related Party Transaction, service provided by related party				$ 918	$ 2,228	$ 2,791
Related Party, advertising expenses						$ 330
Related Party Transaction, actual costs reimbursed					$ 1,653