Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended
	Oct. 01, 2017	Oct. 02, 2016	Jan. 01, 2017
Tax Credit Carryforward [Line Items]
Deferred income taxes	$ (5,220)	$ (10,329)
Unrecognized tax benefits	3,000		$ 3,100
Unrecognized tax benefits that would decrease effective tax rate and provision for income taxes, if recognized	1,500
Expected decrease in unrecognized tax benefits within next twelve months	1,000
Total amount of interest and penalties accrued related to unrecognized tax benefits	$ 1,300		$ 1,200