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Deposits - Narrative (Details) - USD ($)	Jun. 30, 2025	Dec. 31, 2024
Deposits [Abstract]
Digit payment deposits	$ 216,900,000	$ 265,500,000
Deposits sold	$ 24,700,000	$ 0

X

- Definition

Deposits Sold Amount

+ References

No definition available.

+ Details

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

X

- Definition

Represents prepaid debt card deposits.

+ References

No definition available.

+ Details

Name:	pnbk_DigitalPaymentDeposits
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