Name:	pgc_BrokeredCertificatesOfDeposit
Namespace Prefix:	pgc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Deposit Liabilities, Excluding Brokered Deposits.

No definition available.

Name:	pgc_DepositLiabilitiesExcludingBrokeredDeposits
Namespace Prefix:	pgc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Deposits

No definition available.

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

The percentage of carrying value of amounts transferred to third parties for security purposes that are expected to be returned or applied towards payment in the future. As compared to the total of such funds.

No definition available.

Name:	pgc_DepositsPercentage
Namespace Prefix:	pgc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

Listing service certificates of deposit.

No definition available.

Name:	pgc_ListingServiceCertificatesOfDeposit
Namespace Prefix:	pgc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Percentage of interest bearing domestic deposits to deposits certificates of deposit listing service.

No definition available.

Name:	pgc_PercentageOfInterestBearingDomesticDepositsToDepositsCertificatesOfDepositListingService
Namespace Prefix:	pgc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

Percentage Of Non-Brokered Deposits To Deposits.

No definition available.

Name:	pgc_PercentageOfNonBrokeredDepositsToDeposits
Namespace Prefix:	pgc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

Percentage Of Noninterest Bearing Domestic Deposits To Deposits, Demand.

No definition available.

Name:	pgc_PercentageOfNoninterestBearingDomesticDepositsToDepositsDemand
Namespace Prefix:	pgc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.12)
-URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878

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

Amount of deposits in accounts that offer many of the same services as checking accounts although transactions may be somewhat more limited, share some of the characteristics of a money market fund and are insured by the Federal government, also known as money market accounts.

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

Amount of interest-bearing domestic third-party deposits placed by or through the assistance of a deposit broker, also known as brokered deposit liabilities.

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

Amount of interest-bearing domestic checking deposit liabilities.

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

Amount of interest-bearing domestic savings deposit liabilities. Saving deposits bear interest and have no stated maturity.

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

Amount of money in noninterest-bearing domestic accounts that entitle the depositor to withdraw funds at any time without prior notice, also known as demand deposits.

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

- References

No definition available.

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

Percentage of interest-bearing domestic brokered deposit liabilities to total deposit liabilities.

No definition available.

Name:	us-gaap_PercentageOfInterestBearingDomesticDepositsToDepositsBrokered
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

Percentage of interest-bearing domestic certificates of deposit liabilities to total deposit liabilities.

No definition available.

Name:	us-gaap_PercentageOfInterestBearingDomesticDepositsToDepositsCertificatesOfDeposit
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

Percentage of interest-bearing domestic checking demand deposit liabilities to total deposit liabilities.

No definition available.

Name:	us-gaap_PercentageOfInterestBearingDomesticDepositsToDepositsChecking
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

Percentage of interest-bearing domestic money market demand account deposit liabilities to total deposit liabilities.

No definition available.

Name:	us-gaap_PercentageOfInterestBearingDomesticDepositsToDepositsMoneyMarket
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

Percentage of interest-bearing domestic savings deposit liabilities to total deposit liabilities.

No definition available.

Name:	us-gaap_PercentageOfInterestBearingDomesticDepositsToDepositsSavings
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

Percentage of interest-bearing domestic time deposit liabilities to total deposit liabilities.

No definition available.

Name:	us-gaap_PercentageOfInterestBearingDomesticDepositsToDepositsTimeDeposits
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

Amount of time deposit liabilities, including certificates of deposit.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 405
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=116652737&loc=d3e64164-112818

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.12)
-URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878