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COMMITMENTS AND CONTINGENCIES - Additional Information (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Commitments to Extend Credit [Member]
Commitment And Contingencies [Line Items]
Commitments to extend credit	$ 894.8	$ 691.7
Standby Letters of Credit [Member]
Commitment And Contingencies [Line Items]
Commitments to extend credit	18.8	$ 17.0
SBIC [Member]
Commitment And Contingencies [Line Items]
Unfunded commitment for investment	$ 1.1

X

- Definition

Commitment and contingencies.

+ References

No definition available.

+ Details

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Namespace Prefix:	pgc_
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X

- Definition

Unfunded commitment for investment.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

X

- Definition

The face amount of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.

+ References

No definition available.

+ Details

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X

- Details

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X

- Details

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X

- Details

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