No definition available.

Name:	pgc_AllowanceForLoanLossesAbstract
Namespace Prefix:	pgc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

+ References

+ Details

Name:	us-gaap_AllowanceForLoanAndLeaseLossRecoveryOfBadDebts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

+ References

+ Details

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

- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7(d))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)(1)(ii)
-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section L
-Subsection 1

+ Details

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

- Definition

Amount of expense related to estimated loss from loan and lease transactions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.11)
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

+ Details

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

- Details

Name:	us-gaap_EquitySecuritiesByIndustryAxis=us-gaap_AgriculturalSectorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LienCategoryAxis=us-gaap_JuniorLienMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_EquitySecuritiesByIndustryAxis=us-gaap_CommercialAndIndustrialSectorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=pgc_PrimaryResidentialMortgagesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_HomeEquityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=pgc_MultiFamilyPropertyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=pgc_OwnerOccupiedPropertyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=pgc_InvestmentPropertyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConstructionLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

LOANS (Schedule of Activity in Allowance for Loan Losses) (Details) - USD ($) $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allowance for loan losses
Beginning ALLL				$ 19,480				$ 15,373				$ 12,735	$ 19,480	$ 15,373	$ 12,735
Charge-Offs													(991)	(1,088)	(1,040)
Recoveries													267	320	253
Provision (Credit)	$ 1,950	$ 1,600	$ 2,200	1,350	$ 1,250	$ 1,150	$ 1,150	1,325	$ 1,325	$ 750	$ 500	850	7,100	4,875	3,425
Ending ALLL	25,856				19,480				15,373				25,856	19,480	15,373
Agricultural Sector [Member]
Allowance for loan losses
Beginning ALLL				4				3				3	4	$ 3	$ 3
Charge-Offs
Recoveries
Provision (Credit)													(2)	$ 1
Ending ALLL	2				4				3				2	4	$ 3
Residential Portfolio Segment [Member] \| Junior Lien [Member]
Allowance for loan losses
Beginning ALLL				109				156				314	109	156	314
Charge-Offs													(13)	(1)	(346)
Recoveries													62	103	17
Provision (Credit)													(92)	(149)	171
Ending ALLL	66				109				156				66	109	156
Commercial Portfolio Segment [Member] \| Commercial and Industrial Sector [Member]
Allowance for loan losses
Beginning ALLL				880				825				803	880	825	803
Charge-Offs													(73)	(123)	(16)
Recoveries													81	85	64
Provision (Credit)													1,321	93	(26)
Ending ALLL	2,209				880				825				2,209	880	825
Consumer and Other [Member]
Allowance for loan losses
Beginning ALLL				96				78				92	96	78	92
Charge-Offs													(41)	(22)	(11)
Recoveries													13	7	9
Provision (Credit)													44	33	(12)
Ending ALLL	112				96				78				112	96	78
Primary Residential Mortgages [Member] \| Residential Portfolio Segment [Member]
Allowance for loan losses
Beginning ALLL				2,923				2,361				3,047	2,923	2,361	3,047
Charge-Offs													(638)	(273)	(611)
Recoveries													80	1	48
Provision (Credit)													(68)	834	(123)
Ending ALLL	2,297				2,923				2,361				2,297	2,923	2,361
Home Equity Lines of Credit [Member] \| Residential Portfolio Segment [Member]
Allowance for loan losses
Beginning ALLL				156				181				267	156	$ 181	$ 267
Charge-Offs													(210)
Recoveries													2
Provision (Credit)													138	$ (25)	$ (86)
Ending ALLL	86				156				181				86	156	181
Multifamily Property [Member] \| Residential Portfolio Segment [Member]
Allowance for loan losses
Beginning ALLL				8,983				4,003				1,305	8,983	$ 4,003	$ 1,305
Charge-Offs
Recoveries															$ 11
Provision (Credit)													2,830	$ 4,980	2,687
Ending ALLL	11,813				8,983				4,003				11,813	8,983	4,003
Owner Occupied Property [Member] \| Commercial Real Estate Portfolio Segment [Member]
Allowance for loan losses
Beginning ALLL				1,547				2,563				2,509	1,547	2,563	$ 2,509
Charge-Offs														(669)
Recoveries													11	106	$ 77
Provision (Credit)													121	(453)	(23)
Ending ALLL	1,679				1,547				2,563				1,679	1,547	2,563
Investment Property [Member] \| Commercial Real Estate Portfolio Segment [Member]
Allowance for loan losses
Beginning ALLL				4,751				5,083				4,155	4,751	$ 5,083	4,155
Charge-Offs													(16)		(56)
Recoveries													18	$ 18	26
Provision (Credit)													2,837	(350)	958
Ending ALLL	7,590				4,751				5,083				7,590	4,751	5,083
Construction Loans [Member] \| Commercial Portfolio Segment [Member]
Allowance for loan losses
Beginning ALLL				$ 31				$ 120				$ 240	31	$ 120	$ 240
Charge-Offs
Recoveries															$ 1
Provision (Credit)													(29)	$ (89)	(121)
Ending ALLL	$ 2				$ 31				$ 120				$ 2	$ 31	$ 120