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Deposits - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Deposits [Abstract]
Schedule of Prepaid debit card deposits	$ 297.7	$ 265.5

X

- Definition

Represents prepaid debt card deposits.

+ References

No definition available.

+ Details

Name:	pnbk_PrepaidDebitCardDeposits
Namespace Prefix:	pnbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

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