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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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