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Loans Held for Investment (Details 4) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
item
Dec. 31, 2014
Mar. 31, 2014
Loans Held for Investment      
Number of areas where the entity's credit quality is maintained and credit risk managed 2ppbi_FinancingReceivableCreditQualityAndCreditRiskManagementAreaNumber    
Number of Pass scale grades 6ppbi_FinancingReceivableCreditQualityPassGradeNumber    
Credit Risk Grades      
Total Gross Loans $ 2,130,853ppbi_LoansReceivableGross $ 1,628,445ppbi_LoansReceivableGross $ 1,325,469ppbi_LoansReceivableGross
Business loans: Commercial and industrial      
Credit Risk Grades      
Total Gross Loans 420,218ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialAndIndustrialBusinessLoanMember		 428,207ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialAndIndustrialBusinessLoanMember		 271,877ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialAndIndustrialBusinessLoanMember
Business loans: Commercial owner occupied      
Credit Risk Grades      
Total Gross Loans 352,351ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialOwnerOccupiedBusinessLoanMember		 210,995ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialOwnerOccupiedBusinessLoanMember		 223,848ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialOwnerOccupiedBusinessLoanMember
Business loans: SBA      
Credit Risk Grades      
Total Gross Loans 49,855ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_SmallBusinessAdministrationLoansMember		 28,404ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_SmallBusinessAdministrationLoansMember		 11,045ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_SmallBusinessAdministrationLoansMember
Business loans: Warehouse facilities      
Credit Risk Grades      
Total Gross Loans 216,554ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_WarehouseFacilitiesBusinessLoanMember		 113,798ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_WarehouseFacilitiesBusinessLoanMember		 81,033ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_WarehouseFacilitiesBusinessLoanMember
Real estate loans: Commercial non-owner occupied      
Credit Risk Grades      
Total Gross Loans 452,422ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialNonOwnerOccupiedRealEstateLoanMember		 359,213ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialNonOwnerOccupiedRealEstateLoanMember		 333,490ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialNonOwnerOccupiedRealEstateLoanMember
Real estate loans: Multi-family      
Credit Risk Grades      
Total Gross Loans 397,130ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_MultiFamilyRealEstateLoanMember		 262,965ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_MultiFamilyRealEstateLoanMember		 223,200ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_MultiFamilyRealEstateLoanMember
Real estate loans: One-to-four family      
Credit Risk Grades      
Total Gross Loans 116,735ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_OneToFourFamilyRealEstateLoanMember		 122,795ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_OneToFourFamilyRealEstateLoanMember		 141,469ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_OneToFourFamilyRealEstateLoanMember
Real estate loans: Construction      
Credit Risk Grades      
Total Gross Loans 111,704ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= us-gaap_ConstructionLoansMember		 89,682ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= us-gaap_ConstructionLoansMember		 29,857ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= us-gaap_ConstructionLoansMember
Real estate loans: Land      
Credit Risk Grades      
Total Gross Loans 7,243ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_RealEstateLandMember		 9,088ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_RealEstateLandMember		 6,170ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_RealEstateLandMember
Other loans      
Credit Risk Grades      
Total Gross Loans 6,641ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_OtherLoansReceivableMember		 3,298ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_OtherLoansReceivableMember		 3,480ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_OtherLoansReceivableMember
Pass      
Credit Risk Grades      
Total Gross Loans 2,097,145ppbi_LoansReceivableGross
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 1,612,143ppbi_LoansReceivableGross
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 1,305,532ppbi_LoansReceivableGross
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Pass | Business loans: Commercial and industrial      
Credit Risk Grades      
Total Gross Loans 410,328ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialAndIndustrialBusinessLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 426,379ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialAndIndustrialBusinessLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 270,024ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialAndIndustrialBusinessLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Pass | Business loans: Commercial owner occupied      
Credit Risk Grades      
Total Gross Loans 340,685ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialOwnerOccupiedBusinessLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 202,390ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialOwnerOccupiedBusinessLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 212,663ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialOwnerOccupiedBusinessLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Pass | Business loans: SBA      
Credit Risk Grades      
Total Gross Loans 49,855ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_SmallBusinessAdministrationLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 28,132ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_SmallBusinessAdministrationLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 11,031ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_SmallBusinessAdministrationLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Pass | Business loans: Warehouse facilities      
Credit Risk Grades      
Total Gross Loans 216,554ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_WarehouseFacilitiesBusinessLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 113,798ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_WarehouseFacilitiesBusinessLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 81,033ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_WarehouseFacilitiesBusinessLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Pass | Real estate loans: Commercial non-owner occupied      
Credit Risk Grades      
Total Gross Loans 446,900ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialNonOwnerOccupiedRealEstateLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 355,274ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialNonOwnerOccupiedRealEstateLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 328,645ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialNonOwnerOccupiedRealEstateLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Pass | Real estate loans: Multi-family      
Credit Risk Grades      
Total Gross Loans 391,690ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_MultiFamilyRealEstateLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 261,956ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_MultiFamilyRealEstateLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 222,178ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_MultiFamilyRealEstateLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Pass | Real estate loans: One-to-four family      
Credit Risk Grades      
Total Gross Loans 115,780ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_OneToFourFamilyRealEstateLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 122,146ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_OneToFourFamilyRealEstateLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 140,453ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_OneToFourFamilyRealEstateLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Pass | Real estate loans: Construction      
Credit Risk Grades      
Total Gross Loans 111,469ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= us-gaap_ConstructionLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 89,682ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= us-gaap_ConstructionLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 29,857ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= us-gaap_ConstructionLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Pass | Real estate loans: Land      
Credit Risk Grades      
Total Gross Loans 7,243ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_RealEstateLandMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 9,088ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_RealEstateLandMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 6,170ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_RealEstateLandMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Pass | Other loans      
Credit Risk Grades      
Total Gross Loans 6,641ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_OtherLoansReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 3,298ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_OtherLoansReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 3,478ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_OtherLoansReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Special Mention      
Credit Risk Grades      
Total Gross Loans 3,204ppbi_LoansReceivableGross
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember		 773ppbi_LoansReceivableGross
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember		 780ppbi_LoansReceivableGross
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
Special Mention | Business loans: Commercial and industrial      
Credit Risk Grades      
Total Gross Loans 1,250ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialAndIndustrialBusinessLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember		    
Special Mention | Business loans: Commercial owner occupied      
Credit Risk Grades      
Total Gross Loans     272ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialOwnerOccupiedBusinessLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
Special Mention | Business loans: SBA      
Credit Risk Grades      
Total Gross Loans   272ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_SmallBusinessAdministrationLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember		  
Special Mention | Real estate loans: Multi-family      
Credit Risk Grades      
Total Gross Loans 1,954ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_MultiFamilyRealEstateLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember		 501ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_MultiFamilyRealEstateLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember		 508ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_MultiFamilyRealEstateLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
Substandard      
Credit Risk Grades      
Total Gross Loans 30,504ppbi_LoansReceivableGross
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember		 15,529ppbi_LoansReceivableGross
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember		 19,157ppbi_LoansReceivableGross
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
Substandard | Business loans: Commercial and industrial      
Credit Risk Grades      
Total Gross Loans 8,640ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialAndIndustrialBusinessLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember		 1,828ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialAndIndustrialBusinessLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember		 1,853ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialAndIndustrialBusinessLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
Substandard | Business loans: Commercial owner occupied      
Credit Risk Grades      
Total Gross Loans 11,666ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialOwnerOccupiedBusinessLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember		 8,605ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialOwnerOccupiedBusinessLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember		 10,913ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialOwnerOccupiedBusinessLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
Substandard | Business loans: SBA      
Credit Risk Grades      
Total Gross Loans     14ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_SmallBusinessAdministrationLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
Substandard | Real estate loans: Commercial non-owner occupied      
Credit Risk Grades      
Total Gross Loans 5,522ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialNonOwnerOccupiedRealEstateLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember		 3,939ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialNonOwnerOccupiedRealEstateLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember		 4,845ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_CommercialNonOwnerOccupiedRealEstateLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
Substandard | Real estate loans: Multi-family      
Credit Risk Grades      
Total Gross Loans 3,486ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_MultiFamilyRealEstateLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember		 508ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_MultiFamilyRealEstateLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember		 514ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_MultiFamilyRealEstateLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
Substandard | Real estate loans: One-to-four family      
Credit Risk Grades      
Total Gross Loans 955ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_OneToFourFamilyRealEstateLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember		 649ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_OneToFourFamilyRealEstateLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember		 1,016ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_OneToFourFamilyRealEstateLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
Substandard | Real estate loans: Construction      
Credit Risk Grades      
Total Gross Loans 235ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= us-gaap_ConstructionLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember		    
Substandard | Other loans      
Credit Risk Grades      
Total Gross Loans     $ 2ppbi_LoansReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= ppbi_OtherLoansReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember