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Cover - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Feb. 16, 2024
Jun. 30, 2023
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Current Fiscal Year End Date --12-31    
Document Period End Date Dec. 31, 2023    
Document Transition Report false    
Entity File Number 0-22193    
Entity Registrant Name PACIFIC PREMIER BANCORP INC    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 33-0743196    
Entity Address, Address Line One 17901 Von Karman Avenue    
Entity Address, Address Line Two Suite 1200    
Entity Address, City or Town Irvine    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 92614    
City Area Code 949    
Local Phone Number 864-8000    
Title of 12(b) Security Common Stock, par value $0.01 per share    
Trading Symbol PPBI    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction Flag false    
Entity Shell Company false    
Entity Public Float     $ 1,920
Entity Common Stock, Shares Outstanding   95,863,119  
Documents Incorporated by Reference
The information required by Items 10, 11, 12, 13 and 14 of Part III of this Annual Report on Form 10-K will be found in the Company’s definitive proxy statement for its 2023 Annual Meeting of Stockholders, to be filed pursuant to Regulation 14A under the Securities Exchange Act of 1934, as amended, and such information is incorporated herein by this reference.
    
Entity Central Index Key 0001028918    
Amendment Flag false    
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY