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Impairment Of Long-Lived Assets And Other Lease Charges (Tables)
 12 Months Ended
Dec. 31, 2017
Restructuring Costs and Asset Impairment Charges [Abstract]  
Closed Restaurant Reserve [Table Text Block]
The following table presents the activity in the accrual for closed restaurant locations:
 
December 31, 2017
 
January 1, 2017
Balance, beginning of year
$
1,513

 
$
2,088

Provisions for closures
1,174

 
59

Changes in estimates of accrued costs
81

 
(89
)
Payments, net
(862
)
 
(691
)
Other adjustments, including the effect of discounting future obligations
122

 
146

Balance, end of year
$
2,028

 
$
1,513