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Period Type:	instant

Allowance on troubled debt restructured loans in financing receivables.

No definition available.

Name:	pgc_AllowanceOnTroubledDebtRestructuring
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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Financing receivable cumulative number of loans modifications.

No definition available.

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Data Type:	xbrli:integerItemType
Balance Type:	na
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Amount of investment in specific reserve accrual financing receivables (after modification) modified by troubled debt restructurings.

No definition available.

Name:	pgc_FinancingReceivableModificationsSpecificReservesRecordedInvestment
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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Financing receivable substandard and impaired loan.

No definition available.

Name:	pgc_FinancingReceivableSubstandardAndImpairedLoan
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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Impaired non accrual troubled debt restructured loans in financing receivables that are on nonaccrual status as of the balance sheet date.

No definition available.

Name:	pgc_ImpairedNonAccrualLoansPerformingTroubledDebtRestructuring
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Data Type:	xbrli:monetaryItemType
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Loan receivable, validate risk ratings performed for criticized and classified rated borrowers with relationship exposure, value.

No definition available.

Name:	pgc_LoanReceivableValidateRiskRatingsPerformedForCriticizedAndClassifiedRatedBorrowersWithRelationshipExposureValue
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Data Type:	xbrli:monetaryItemType
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Loan receivable, validate risk ratings performed for large sample of borrowers with relationship, value.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Loan receivable, validate risk ratings performed for large sample or new lending to existing relationships, value.

No definition available.

Name:	pgc_LoanReceivableValidateRiskRatingsPerformedForLargeSampleOrNewLendingToExistingRelationshipsValue
Namespace Prefix:	pgc_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Loan receivable validate risk ratings performed for leveraged loans, value.

No definition available.

Name:	pgc_LoanReceivableValidateRiskRatingsPerformedForLeveragedLoansValue
Namespace Prefix:	pgc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Loan receivable, validate risk ratings performed for new regulation loan commitments, value.

No definition available.

Name:	pgc_LoanReceivableValidateRiskRatingsPerformedForNewRegulationLoanCommitmentsValue
Namespace Prefix:	pgc_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Loan receivable validate risk ratings performed for no borrower with commitments, value.

No definition available.

Name:	pgc_LoanReceivableValidateRiskRatingsPerformedForNoBorrowerWithCommitmentsValue
Namespace Prefix:	pgc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Loan receivable, validate risk ratings performed for Small sample of borrowers with relationship, value.

No definition available.

Name:	pgc_LoanReceivableValidateRiskRatingsPerformedForSmallSampleOfBorrowersWithRelationshipValue
Namespace Prefix:	pgc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Number of financing receivables that have been modified by troubled debt restructurings.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524

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Period Type:	duration

Amount, after troubled debt restructuring, of modified financing receivable.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Amount of financing receivable on nonaccrual status.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5111-111524

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919258-210447

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

Amount of financing receivable modified on trial basis.

Name:	us-gaap_LoanRestructuringTrialModificationsAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Name:	us-gaap_LoanRestructuringModificationAxis=us-gaap_PaymentDeferralMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	us-gaap_DerivativeInstrumentRiskAxis=pgc_LoanLevelSwapsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_InternalCreditAssessmentAxis=us-gaap_SubstandardMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_RangeAxis=srt_MinimumMember
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