Acquisitions - Business Acquisition Pro Forma Information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
Business Combinations [Abstract]
Net sales	$ 1,735,181	$ 1,564,956
Income before income taxes	272,724	142,150
Net income	$ 215,228	$ 75,604
Net income per share — basic (in dollars per share)	$ 8.61	$ 3.05
Net income per share — diluted (in dollars per share)	$ 8.53	$ 3.00