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Commitments and Contingencies (Details)
$ in Thousands
Jun. 30, 2019
USD ($)
Oct. 29, 2018
employee
Ameranth, Inc. vs Papa John's International, Inc.    
Loss Contingencies [Line Items]    
Expected future costs $ 0  
Durling et al v. Papa John's International, Inc.    
Loss Contingencies [Line Items]    
Approximate number of employees who opted into the class action | employee   9,571
Expected future costs $ 0