Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Percentage of Loans

No definition available.

Name:	ppbi_VariableInterestEntityReportingEntityInvolvementMaximumLossExposurePercentageOfLoans
Namespace Prefix:	ppbi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of expenses incurred but not yet paid nor invoiced, and liabilities classified as other.

+ References

No definition available.

+ Details

Name:	us-gaap_AccruedLiabilitiesAndOtherLiabilities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Face (par) amount of the original debt instrument that was repurchased.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentRepurchasedFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123419778&loc=d3e5747-111685

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=123419778&loc=d3e5728-111685

+ Details

Name:	us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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.

+ References

No definition available.

+ Details

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

- Details

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

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_JuniorSubordinatedDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	srt_ConsolidatedEntitiesAxis=us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=ppbi_MultifamilyLoanSecuritizationLiabilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=ppbi_MultifamilyLoanSecuritizationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Variable Interest Entities - Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jul. 31, 2021	Dec. 31, 2020
Variable Interest Entity [Line Items]
Accrued liabilities and other liabilities	$ 216,688		$ 243,207
Heritage Oaks Capital Trust II \| Subordinated debt
Variable Interest Entity [Line Items]
Redeemed amount of debt instrument		$ 5,200
Santa Lucia Bancorp (CA) Capital Trust \| Subordinated debt
Variable Interest Entity [Line Items]
Redeemed amount of debt instrument		$ 5,200
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Maximum Loss	$ 212,082		223,509
Variable Interest Entity, Not Primary Beneficiary \| Multifamily Loan Securitization, Liability
Variable Interest Entity [Line Items]
Maximum loss, percentage of loans	10.00%
Maximum Loss	$ 50,901		50,901
Variable Interest Entity, Not Primary Beneficiary \| Multifamily Loan Securitization
Variable Interest Entity [Line Items]
Accrued liabilities and other liabilities	$ 448		$ 448