Summary of Significant Accounting Policies - Information Regarding Warranty Accrual (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Guarantees [Abstract]
Accrued Warranty, Beginning of Period	$ 5,569	$ 4,237	$ 3,302
Accrued Warranty, Acquired		274
Accrued Warranty, Charged to Expense	10,675	11,064	8,256
Accrued Warranty, Adjustments	(212)	754	332
Accrued Warranty, Settlements	(10,646)	(10,760)	(7,653)
Accrued Warranty, End of Period	$ 5,386	$ 5,569	$ 4,237