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Introduction and Basis of Reporting (Details)
 12 Months Ended
Dec. 25, 2013
restaurant
Dec. 26, 2012
restaurant
Franchisor Disclosure [Line Items]    
Number of states in which entity operates 50  
Number of territories in which entity operates 2  
Number of foreign countries in which entity operates 9  
Entity and franchisee unit activity [Abstract]    
Restaurant units, end of period 1,700 1,688
Company-owned restaurants [Member]
    
Entity and franchisee unit activity [Abstract]    
Restaurant units, beginning of period 164 206
Units opened 0 1
Units acquired from franchisees 2 1
Units sold to franchisees (2) (36)
Units closed (including units relocated) (1) (8)
Restaurant units, end of period 163 164
Franchised and licensed restaurants [Member]
    
Entity and franchisee unit activity [Abstract]    
Restaurant units, beginning of period 1,524 1,479
Units opened 46 39
Units purchased from Company 2 36
Units acquired by Company (2) (1)
Units closed (including units relocated) (33) (29)
Restaurant units, end of period 1,537 1,524
California
    
Franchisor Disclosure [Line Items]    
Percentage of restaurants operated (percent) 24.00%  
Texas
    
Franchisor Disclosure [Line Items]    
Percentage of restaurants operated (percent) 11.00%  
Florida
    
Franchisor Disclosure [Line Items]    
Percentage of restaurants operated (percent) 9.00%