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Related Party - Additional Information (Detail) - USD ($) $ in Thousands			3 Months Ended					9 Months Ended
	May 06, 2020	Oct. 18, 2015	Oct. 02, 2021	Jul. 03, 2021	Apr. 03, 2021	Sep. 26, 2020	Jun. 27, 2020	Oct. 02, 2021	Sep. 26, 2020	Jan. 02, 2021
Related Party Transaction [Line Items]
Initial agreement term		5 years
Ms. Winfrey
Related Party Transaction [Line Items]
Fully vested option to purchase shares of common stock	3,276
Dividend yield	0.00%
Volatility rate	63.68%
Risk-fee interest rate	0.41%
Accounts payable to related parties			$ 0					$ 0		$ 76
Number of shares purchased from related party				666,000	875,000		604,000
Stock options exercised				251,000	330,000		297,000
Ms. Winfrey and her related entities
Related Party Transaction [Line Items]
Related Party Transaction, service provided by related party			$ 80			$ 305		$ 746	$ 2,066
Related Party Transaction, actual costs reimbursed						$ 2			$ 1,653
Selling, General and Administrative Expenses \| Ms. Winfrey
Related Party Transaction [Line Items]
Compensation expense							$ 32,686