Note 14 - Subsequent Events (Details Textual) - Subsequent Event [Member] $ in Millions	Jun. 08, 2020 USD ($)
Financing Receivable, Number of Principal and Interest Payment Deferrals	240
Financing Receivable, Principal and Interest Deferred Payments	$ 219

Represents amount of deferred payments requests for financing receivable.

No definition available.

Name:	pnbk_FinancingReceivableDeferredPaymentsRequestsAmount
Namespace Prefix:	pnbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant