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Related Party - Additional Information (Detail) - USD ($) $ in Thousands			3 Months Ended			6 Months Ended
	May 06, 2020	Oct. 18, 2015	Jul. 03, 2021	Apr. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 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			$ 192		$ 823	$ 666	$ 1,761
Related Party Transaction, actual costs reimbursed					141		$ 1,650
Selling, General and Administrative Expenses \| Ms. Winfrey
Related Party Transaction [Line Items]
Compensation expense					$ 32,686