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Significant Accounting Policies (Details 1)
Mar. 29, 2015
restaurant
Mar. 30, 2014
restaurant
Star Papa, LP    
Noncontrolling Interests    
Number of Restaurants 84us-gaap_NumberOfRestaurants
/ dei_LegalEntityAxis
= pzza_StarPapaLPMember		 80us-gaap_NumberOfRestaurants
/ dei_LegalEntityAxis
= pzza_StarPapaLPMember
Papa John's Ownership 51.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= pzza_StarPapaLPMember		 51.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= pzza_StarPapaLPMember
Noncontrolling Interest Ownership 49.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
/ dei_LegalEntityAxis
= pzza_StarPapaLPMember		 49.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
/ dei_LegalEntityAxis
= pzza_StarPapaLPMember
Colonel's Limited, LLC    
Noncontrolling Interests    
Number of Restaurants 56us-gaap_NumberOfRestaurants
/ dei_LegalEntityAxis
= pzza_ColonelsLimitedLLCMember		 52us-gaap_NumberOfRestaurants
/ dei_LegalEntityAxis
= pzza_ColonelsLimitedLLCMember
Papa John's Ownership 70.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= pzza_ColonelsLimitedLLCMember		 70.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= pzza_ColonelsLimitedLLCMember
Noncontrolling Interest Ownership 30.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
/ dei_LegalEntityAxis
= pzza_ColonelsLimitedLLCMember		 30.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
/ dei_LegalEntityAxis
= pzza_ColonelsLimitedLLCMember
PJ Minnesota, LLC    
Noncontrolling Interests    
Number of Restaurants 35us-gaap_NumberOfRestaurants
/ dei_LegalEntityAxis
= pzza_PJMinnesotaLLCMember		 34us-gaap_NumberOfRestaurants
/ dei_LegalEntityAxis
= pzza_PJMinnesotaLLCMember
Papa John's Ownership 70.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= pzza_PJMinnesotaLLCMember		 80.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= pzza_PJMinnesotaLLCMember
Noncontrolling Interest Ownership 30.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
/ dei_LegalEntityAxis
= pzza_PJMinnesotaLLCMember		 20.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
/ dei_LegalEntityAxis
= pzza_PJMinnesotaLLCMember
PJ Denver, LLC    
Noncontrolling Interests    
Number of Restaurants 25us-gaap_NumberOfRestaurants
/ dei_LegalEntityAxis
= pzza_PJDenverLLCMember		 25us-gaap_NumberOfRestaurants
/ dei_LegalEntityAxis
= pzza_PJDenverLLCMember
Papa John's Ownership 60.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= pzza_PJDenverLLCMember		 60.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= pzza_PJDenverLLCMember
Noncontrolling Interest Ownership 40.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
/ dei_LegalEntityAxis
= pzza_PJDenverLLCMember		 40.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
/ dei_LegalEntityAxis
= pzza_PJDenverLLCMember