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Business Combinations (Details)
$ in Thousands
12 Months Ended
Jan. 03, 2017
USD ($)
Dec. 29, 2015
USD ($)
Dec. 30, 2014
USD ($)
restaurant
Acquired Finite-Lived Intangible Assets [Line Items]      
Payments to Acquire Businesses, Gross $ 0 $ 628 $ 15,708
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]      
Intangibles 1,567    
Goodwill 6,400 6,400  
Franchise Restaurants [Member]      
Acquired Finite-Lived Intangible Assets [Line Items]      
Number of restaurants acquired | restaurant     19
Payments to Acquire Businesses, Gross     $ 15,739
Acquisition related costs     $ 100
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]      
Inventories 352    
Prepaid expenses and other assets 33    
Deferred tax asset 142    
Property and equipment 7,564    
Intangibles 1,567    
Goodwill 6,400    
Deferred rent and other liabilities (319)    
Total purchase price $ 15,739    
Below Market Leases, Amortization Period 11 years    
Franchise Rights [Member]      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]      
Intangibles $ 1,400    
Franchise Rights [Member] | Franchise Restaurants [Member]      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]      
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 16 years    
Off-Market Favorable Lease [Member]      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]      
Intangibles $ 185 $ 185  
Off-Market Favorable Lease [Member] | Franchise Restaurants [Member]      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]      
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 9 years