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