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Segment Information - Concentration (Details) | Dec. 31, 2017 entity
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Consolidated revenues |
Major customers disclosures |
Concentration risk, number | 0

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- Definition For an entity that discloses a concentration risk in relation to a quantitative amount, this concept represents the number of customers exceeding the threshold percentage. + References No definition available. + Details
Name: | pzza_ConcentrationRiskNumber
Namespace Prefix: | pzza_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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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_EntityWideRevenueMajorCustomerLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |