Exit and Disposal Activities - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended	9 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Jul. 02, 2016	Oct. 01, 2016	Oct. 03, 2015	Jan. 02, 2016
Restructuring and Related Activities [Abstract]
Restructuring costs incurred	$ 0	$ 0		$ 900,000	$ 0
Accrued restructuring costs			$ 900,000	900,000
Expected exit and disposal cost	3,100,000		$ 3,700,000	3,100,000		$ 4,100,000
Expected exit and disposal cost, remainder of fiscal period	$ 1,000,000			$ 1,000,000