Accrued Payroll and Employee Benefits (Detail) - USD ($) $ in Thousands	Jan. 01, 2021	Jan. 03, 2020
Employee Related Liabilities Current [Abstract]
Accrued bonuses payable	$ 51,126	$ 54,471
Accrued 401(k) contributions	9,127	8,878
Accrued vacation	13,174	10,896
Deferred compensation plan	5,016	7,984
Other accrued payroll and employee benefits	4,751	4,494
Total accrued payroll and employee benefits	$ 83,194	$ 86,723