Income Taxes - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 26, 2019	Dec. 27, 2018	Dec. 28, 2017
Income Taxes
Description of Impact of the Tax Cuts and Jobs Act of 2017			Reduction in the corporate tax rate and the provisions related to executive compensation and 100% bonus depreciation on qualifying property
Effective Income Tax Rate, Adjusted For Earnings From Noncontrolling Interests	22.70%	19.70%	5.30%
Effective Income Tax Rate Excluding Tax Credit		22.70%	36.20%
Income Tax Credits and Adjustments		$ 1,947,000	$ 21,240,000
Income Tax Examination Interest Income	$ 1,000	68,000
Income Tax Examination, Interest Expense			50,000
Proceeds from Income Tax Paid (Refunds)	3,062,000	$ (218,000)	23,691,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate			$ 67,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 0