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Subsequent Events (Details)
$ / shares in Units, $ in Thousands
3 Months Ended 4 Months Ended 9 Months Ended
Apr. 16, 2017
restaurant
$ / shares
Jan. 22, 2017
$ / shares
Jan. 17, 2016
$ / shares
Jul. 09, 2017
USD ($)
Oct. 02, 2016
USD ($)
Subsequent Event [Line Items]          
Common Stock, Dividends, Per Share, Declared | $ / shares   $ 0.40 $ 0.30    
Subsequent Event [Member]          
Subsequent Event [Line Items]          
Common Stock, Dividends, Per Share, Declared | $ / shares $ 0.40        
Number of Restaurants | restaurant 75        
Term Loan [Member]          
Subsequent Event [Line Items]          
Unamortized Debt Issuance Expense         $ 3,800
Minimum [Member] | Subsequent Event [Member]          
Subsequent Event [Line Items]          
Estimated Pre-Tax Proceeds from Sale to Franchisees       $ 40,000  
Maximum [Member] | Subsequent Event [Member]          
Subsequent Event [Line Items]          
Estimated Pre-Tax Proceeds from Sale to Franchisees       $ 45,000