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Insurance Reserves - Changes in Reserves (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 25, 2016
Insurance Reserves |  |
Balance at the beginning of the period | $ 35,443 | $ 30,550
Additions | 47,032 | 42,508
Payments | (40,633) | (37,615)
Balance at the end of the period | $ 41,842 | $ 35,443

X
- Definition Expense incurred during the period for the Company's insurance programs. + References No definition available. + Details
Name: | pzza_InsuranceExpense
Namespace Prefix: | pzza_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Payments made during the period for the Company's insurance programs. + References No definition available. + Details
Name: | pzza_InsurancePayments
Namespace Prefix: | pzza_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Insurance Reserves, Current and Noncurrent + References No definition available. + Details
Name: | pzza_InsuranceReservesCurrentAndNoncurrent
Namespace Prefix: | pzza_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_InsuranceLossReservesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration