Fair Values of Financial Instruments - Summary of Acquisition Related Contingent Consideration Liability (Detail) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2021	Mar. 29, 2020
Business Combination, Contingent Consideration, Liability [Roll Forward]
Payments of acquisition related contingent consideration	$ (10,046)	$ (10,452)
Increase in fair value	10,998	712
Level 3
Business Combination, Contingent Consideration, Liability [Roll Forward]
Beginning balance - Level 3 liability	434,694	446,684
Payments of acquisition related contingent consideration	(10,046)	(10,452)
Reclassification to current payables	100	150
Increase in fair value	10,998	712
Ending balance - Level 3 liability	$ 435,746	$ 437,094