Acquisitions - Pro Forma Information Adjustments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 27, 2021	Mar. 28, 2020
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment
Net income	$ 61,317	$ 21,438
Amortization
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment
Net income	(279)	(834)
Depreciation
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment
Net income	7	48
Transaction costs
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment
Net income	707	(707)
Amortization of inventory step-up
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment
Net income	3,490	(5,137)
Income tax (expense) benefit of above items
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment
Net income	$ (831)	$ 1,398