Deposits - Narrative (Details) - USD ($) $ in Millions	Jul. 22, 2020	Dec. 31, 2022	Dec. 31, 2021
Statistical Disclosure for Banks [Abstract]
Payments to acquire prepaid debit card deposits	$ 50.0
Prepaid debit card deposits		$ 197.3	$ 150.4

he cash outflow associated with the purchase of prepaid debit card deposits.

No definition available.

Name:	pnbk_PaymentsToAcquirePrepaidDebitCardDeposits
Namespace Prefix:	pnbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration