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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: