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Favorable and Unfavorable Leases (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 29, 2013
Sep. 29, 2013
Leases, Acquired-in-Place, Market Adjustment [Member]
Sep. 30, 2012
Leases, Acquired-in-Place, Market Adjustment [Member]
Sep. 29, 2013
Leases, Acquired-in-Place, Market Adjustment [Member]
Sep. 30, 2012
Leases, Acquired-in-Place, Market Adjustment [Member]
May 30, 2012
Number of Restaurants Acquired [Member]
Acquired Finite-Lived Intangible Assets [Line Items]            
Number of Restaurants 564         278
Amortization of Intangible Assets   $ 140 $ 139 $ 418 $ 186  
Amortization Expense, All of 2013   557   557    
2014   546   546    
2015   528   528    
2016   449   449    
2017   439   439    
2018   $ 410   $ 410