Retirement Plans - Additional Information (Detail) - USD ($)	12 Months Ended
	Jan. 01, 2021	Jan. 03, 2020	Dec. 28, 2018
Compensation And Retirement Disclosure [Abstract]
Defined Contribution Plan Employer Contribution Percentage Of Eligible Wages	7.00%
Defined Contribution Plan Employer Contribution Annual Vesting Percentage	20.00%
Defined Contribution Plan Employer Contribution Annual Vesting Period	5 years
Pension and Other Postretirement Benefits Cost (Reversal of Cost)	$ 9,752,000	$ 9,073,000	$ 8,419,000