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Goodwill and Other Intangible Assets (Details)
$ in Thousands
3 Months Ended
Mar. 29, 2017
USD ($)
restaurants
Dec. 28, 2016
USD ($)
Goodwill [Roll Forward]    
Balance, December 28, 2016 $ 35,233  
Additions related to acquisition 374  
Balance, March 29, 2017 35,607  
Intangible Assets [Line Items]    
Gross carrying amount - Trade names 44,077 $ 44,076
Gross carrying amount - Liquor licenses 166 166
Accumulated amortization - Intangible assets with definite lives 1,820 1,437
Intangible assets $ 56,523 55,930
Restaurants reacquired from franchisees | restaurants 3  
Purchase price to reacquire franchised restaurant $ 1,400  
Purchase price allocation of property 500  
Purchase price allocation of goodwill 374  
Capital leases recorded related to acquisitions 400  
Other Intangible Assets [Member]    
Intangible Assets [Line Items]    
Gross carrying amount - Intangible assets with definite lives 190 190
Accumulated amortization - Intangible assets with definite lives 188 186
Franchise Rights [Member]    
Intangible Assets [Line Items]    
Gross carrying amount - Intangible assets with definite lives 12,090 11,498
Accumulated amortization - Intangible assets with definite lives 1,632 $ 1,251
Purchase price allocation of reacquired franchise rights $ 600