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Operating (Gains), Losses and Other Charges, Net (Details) $ in Thousands	12 Months Ended
	Dec. 25, 2019 USD ($)	Dec. 26, 2018 USD ($)	Dec. 27, 2017 USD ($) restaurant
Other Income and Expenses [Abstract]
Gains on sales of assets and other, net	$ (93,608)	$ (513)	$ (1,729)
Software implementation costs	0	0	5,247
Restructuring charges and exit costs	2,428	1,575	485
Impairment charges	0	1,558	326
Operating (gains), losses and other charges, net	(91,180)	2,620	4,329
Gain on insurance settlements		1,200
Loss on sale of restaurants		700
Restructuring charges and exit costs [Abstract]
Exit costs	272	518	385
Severance and other restructuring charges	2,156	1,057	100
Total restructuring charges and exit costs	2,428	1,575	485
Components of change in accrued exit cost liabilities [Roll Forward]
Balance, beginning of year	1,155	1,180
Exit costs	272	518	385
Payments, net of sublease receipts		(615)
Interest accretion		72
Balance, end of year	200	1,155	1,180
Less current portion included in other current liabilities		546
Long-term portion included in other noncurrent liabilities		609
Accrued severance and other restructuring charges	900	600
Impairment charges	$ 0	$ 1,558	$ 326
Number of restaurants relocated, resulting in impairment charges | restaurant			2

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