Employee Benefit Plans - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 29, 2020	Dec. 31, 2019	Jan. 01, 2019
Defined Benefit Plan Disclosure [Line Items]
Employer matching contribution rate towards employee contribution	33.00%
Percentage of deferred earnings in employer matching contribution rate	6.00%
Employer contribution	$ 200,000	$ 600,000	$ 600,000
Base compensation percentage for participating employees based on eligible bonus maximum	100.00%
Other assets, net	$ 42,836,000	35,812,000
Other liabilities	14,068,000	11,869,000
Deferred compensation plan
Defined Benefit Plan Disclosure [Line Items]
Other assets, net	13,400,000	11,400,000
Other liabilities	13,300,000	$ 11,200,000
Contributions made or accrued	$ 0