Warranty - Summary of Current Period Charges, Adjustments to Previous Estimates, Settlements representing Actual Costs Incurred with regard to Accrued Warranty (Detail) - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2020	Mar. 30, 2019
Guarantees And Product Warranties [Abstract]
Accrued Warranty, Beginning of Period	$ 6,244	$ 6,149
Accrued Warranty, Acquired	1,592
Accrued Warranty, Charged to Expense	3,841	2,820
Accrued Warranty, Adjustments	(20)	28
Accrued Warranty, Settlements	(4,269)	(3,016)
Accrued Warranty, End of Period	$ 7,388	$ 5,981