Accrued Payroll and Employee Benefits (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Jan. 01, 2021
Employee Related Liabilities Current [Abstract]
Accrued bonuses payable	$ 66,723	$ 51,126
Accrued 401(k) contributions	9,332	9,127
Accrued vacation	13,100	13,174
Deferred compensation plan	9,380	5,016
Other accrued payroll and employee benefits	5,017	4,751
Total accrued payroll and employee benefits	$ 103,552	$ 83,194