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Commitments and Contingencies (Detail Textuals)
$ in Millions
6 Months Ended
Jun. 28, 2016
USD ($)
franchisee
Guarantee of Indebtedness of Others [Member]  
Loss Contingencies [Line Items]  
Franchisees guaranteed under operating leases (in franchisees) | franchisee 90
Potential amount of future rental payments | $ $ 284.1
Minimum [Member]  
Loss Contingencies [Line Items]  
Lease Expiration Date Jul. 15, 2020
Maximum [Member]  
Loss Contingencies [Line Items]  
Lease Expiration Date Feb. 28, 2049