Name:	ppbi_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesNonaccrualStatusCarryingAmountNet
Namespace Prefix:	ppbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the number of areas related to financing receivables where the entity's credit quality is maintained and credit risk managed.

No definition available.

Name:	ppbi_FinancingReceivableCreditQualityAndCreditRiskManagementAreaNumber
Namespace Prefix:	ppbi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Represents the number of subcategories established within pass grade to stratify risk associated with pass loans.

No definition available.

Name:	ppbi_FinancingReceivableCreditQualityPassGradeNumber
Namespace Prefix:	ppbi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Represents the amount of investment in credit impaired financing receivables purchased with related allowance for credit losses and without a related allowance for credit losses.

No definition available.

Name:	ppbi_ImpairedFinancingReceivableRecordedInvestmentPurchaseCredit
Namespace Prefix:	ppbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of unpaid principal balance of impaired financing receivables that are on nonaccrual status as of the balance sheet date with related allowance for credit losses and without related allowance for credit losses.

No definition available.

Name:	ppbi_ImpairedFinancingReceivableUnpaidPrincipalBalanceNonaccrualStatus
Namespace Prefix:	ppbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the adjustment resulting from changes in mark-to-market premium of loan balance.

No definition available.

Name:	ppbi_LoansReceivableMarkToMarketPremium
Namespace Prefix:	ppbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Adjustment resulting from changes in unaccreted market value to loan balance.

No definition available.

Name:	ppbi_LoansReceivableUnaccretedMarkToMarketDiscount
Namespace Prefix:	ppbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Represents the amount up to which the bank can provide loans on secured basis to one borrower as per current regulations.

No definition available.

Name:	ppbi_SecuredLoansToOneBorrowerLimit
Namespace Prefix:	ppbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Represents the outstanding balance as of the balance sheet date of loans to one borrower of secured credit.

No definition available.

Name:	ppbi_SecuredLoansToOneBorrowerOutstandingBalance
Namespace Prefix:	ppbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Represents the amount up to which the bank can provide loans on unsecured basis to one borrower as per current regulations.

No definition available.

Name:	ppbi_UnsecuredLoansToOneBorrowerLimit
Namespace Prefix:	ppbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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.

No definition available.

Name:	us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Name:	us-gaap_BusinessAcquisitionAxis=ppbi_CanyonNationalBankMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_BusinessAcquisitionAxis=ppbi_SanDiegoTrustBankMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_BusinessAcquisitionAxis=ppbi_IndependenceBankMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_BusinessAcquisitionAxis=ppbi_FirstAssociationsBankMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: