Quarterly Financial Data (Unaudited) (Narrative)(Details) $ in Thousands |
3 Months Ended | 12 Months Ended | ||||
|---|---|---|---|---|---|---|
|
Dec. 31, 2017
USD ($)
|
Dec. 25, 2016
USD ($)
Restaurant
|
Sep. 25, 2016
USD ($)
|
Dec. 31, 2017
USD ($)
|
Dec. 25, 2016
USD ($)
Restaurant
|
Dec. 27, 2015
USD ($)
|
|
| Quarterly Financial Information Disclosure [Abstract] | ||||||
| Gain on insurance settlements | $ 1,400 | $ 1,362 | $ 0 | $ 0 | ||
| Gain on insurance settlements, net of tax | $ 1,000 | |||||
| Deferred tax balance adjustment | (11,696) | 0 | 0 | |||
| Impairment and closure costs | $ 1,100 | $ 400 | $ 0 | $ 1,517 | $ 4,360 | |
| Impairment and closure costs net of tax | $ 1,000 | $ 300 | ||||
| Number of Restaurants | Restaurant | 1 | 1 | ||||
| X | ||||||||||
- Definition Closure Costs, Number of Restaurants No definition available.
|
| X | ||||||||||
- Definition Insured Event, Gain (Loss), Net of Tax No definition available.
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| X | ||||||||||
- Definition restructuring, settlement and impairment provisions net of tax No definition available.
|
| X | ||||||||||
- Definition Tax Cuts And Jobs Act Of 2017 Change In Tax Rate Income Tax Expense (Benefit) No definition available.
|
| X | ||||||||||
- Definition Amount of excess (deficiency) of insurance recovery over the loss incurred from an insured event. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of restructuring charges, remediation cost, and asset impairment loss. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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