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Note 14 - Subsequent Event (Details Textual) $ in Millions | Jul. 18, 2022 USD ($)
--- | ---
Subsequent Event [Member] | American Challenger [Member] |
Private Placement, Termination Amount | $ 540

X
- Definition the amount of termination of private placement. + References No definition available. + Details
Name: | pnbk_PrivatePlacementTerminationAmount
Namespace Prefix: | pnbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=pnbk_AmericanChallengerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |