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Note 9 - Deposits (Details Textual) - USD ($) $ in Millions | Jul. 22, 2020 | Dec. 31, 2020
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Payments to Acquire Prepaid Debit Card Deposits | $ 50.0 |
Prepaid Debit Card Deposits |  | $ 59.3

X
- Definition he cash outflow associated with the purchase of prepaid debit card deposits. + References No definition available. + Details
Name: | pnbk_PaymentsToAcquirePrepaidDebitCardDeposits
Namespace Prefix: | pnbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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