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Basis Of Presentation Presentation Details (Details) (2013 Qdoba Closures [Member])
Jul. 07, 2013
restaurant
2013 Qdoba Closures [Member]
  
Number of restaurants closed [Line Items]  
Number of Restaurants 62us-gaap_NumberOfRestaurants
/ jack_A2013QdobaClosuresAxis
= jack_A2013QdobaClosuresMember