Income Taxes - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Income Tax Disclosure [Abstract]
Effect of tax on accumulated foreign earnings	$ 0	$ 111	$ 4,415
Earnings per diluted share, impact of TCJA (in dollars per share)			$ 0.08
State income tax credit carryforwards with expiration	2,600
Other state income tax credit carryforwards with unlimited life	9,000
State net operating loss carryforwards with potential tax benefits	9,600
Valuation allowances	12,000
Federal and foreign tax attributes with unlimited life	4,600
Federal and foreign tax attributes with potential tax benefits	1,600
Federal and foreign tax attributes, valuation allowance	3,400
Income taxes paid	$ 49,300	$ 41,800	$ 38,100