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Business Combination Business Combinations and Divestitures (Details) (North Carolina Franchise Acquisition [Member], USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
North Carolina Franchise Acquisition [Member]
 
Business Acquisition [Line Items]  
Bakery-cafe sales, net $ 1,888,914us-gaap_BusinessAcquisitionsProFormaRevenue
/ us-gaap_BusinessAcquisitionAxis
= pnra_NorthCarolinaFranchiseAcquisitionMember
Net income $ 173,763us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss
/ us-gaap_BusinessAcquisitionAxis
= pnra_NorthCarolinaFranchiseAcquisitionMember