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Litigation, Commitments and Contingencies - Leases (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 USD ($) item | Dec. 25, 2016 USD ($) | Dec. 27, 2015 USD ($)
Lease disclosures |  |  |
Payments received from sublease | $ 7.4 | $ 7.5 | $ 6.5
Total lease expense | $ 45.0 | $ 45.0 | $ 36.2
Office, retail and commissary space |  |  |
Lease disclosures |  |  |
Operating leases, average term in years | 5 years |  |
Number of renewals | item | 1 |  |
Tractors and trailers |  |  |
Lease disclosures |  |  |
Operating leases, average term in years | 7 years |  |

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- Definition Minimum number of renewal options under our operating leases. + References No definition available. + Details
Name: | pzza_NumberOfLeaseRenewalOptions
Namespace Prefix: | pzza_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Average term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format. + References No definition available. + Details
Name: | pzza_OperatingLeaseContractsNoncancellableLeaseTerms
Namespace Prefix: | pzza_
Data Type: | us-types:durationStringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
Name: | us-gaap_LeaseAndRentalExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_OperatingLeasedAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of revenue recognized for the period under subleasing arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 55 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=77891322&loc=d3e41620-112719 + Details
Name: | us-gaap_OperatingLeasesIncomeStatementSubleaseRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=pzza_OfficeRetailAndCommisarySpaceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_TransportationEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |