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v3.23.1

Interest Rate Derivatives - Additional Information (Details) | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Derivative [Line Items] |  |
Hedging contracts rates | 0.02% | 0.02%
Minimum [Member] |  |
Derivative [Line Items] |  |
Hedging contracts rates | 0.18% |
Maximum [Member] |  |
Derivative [Line Items] |  |
Hedging contracts rates | 0.09% |
Cash Flow Hedging [Member] |  |
Derivative [Line Items] |  |
Hedging contracts rates |  | 0.20%

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- Definition Hedging contracts rates + References No definition available. + Details
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Namespace Prefix: | pbhc_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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

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- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_CashFlowHedgingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |