Employee Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Retirement Benefits [Abstract]
Age of employees	401(k) plan covering substantially all employees 18 years of age or older who have at least three months of service.
Service period required	3 months
Employee's contribution	100.00%
Matching contribution	3.00%	3.00%	3.00%
Vesting rate	20.00%
Requisite hours of work	At least 1,000 hours
Recognized employee benefit	$ 1.8	$ 1.9	$ 0.7