XML 92 R77.htm IDEA: XBRL DOCUMENT
v3.19.1

Noncontrolling Interests - Joint Ventures (Details) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2018 entity | Apr. 01, 2018 entity | Dec. 30, 2018 restaurant entity | Dec. 31, 2017 restaurant entity
Minority Interest [Line Items] |  |  |  |
Number of joint ventures |  |  | 3 | 5
Joint ventures |  |  |  |
Minority Interest [Line Items] |  |  |  |
Number of joint ventures divested | 1 | 1 | 2 |
Number of Restaurants | restaurant |  |  | 183 | 246

X
- Definition The number of joint ventures divested during the period. + References No definition available. + Details
Name: | pzza_NumberOfJointVenturesDivested
Namespace Prefix: | pzza_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of joint ventures, which includes noncontrolling interests. + References No definition available. + Details
Name: | pzza_NumberOfJointVenturesHavingNoncontrollingInterests
Namespace Prefix: | pzza_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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

X
- Definition Represents the number of restaurants. + References No definition available. + Details
Name: | us-gaap_NumberOfRestaurants
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_CorporateJointVentureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |