XML 25 R61.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Fair Value and Interest Rate Risk (Details Textual) (USD $) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2013 | Dec. 31, 2012
Fair Value and Interest Rate Risk (Textual) [Abstract] |  |
Short-term borrowings | 90 days |
Transfer of assets between level 1 , 2 or 3 | $ 0 | $ 0

X
- Details
Name: | pnbk_FairValueAndInterestRateRiskTextualAbstract
Namespace Prefix: | pnbk_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value assets level 1 to level 2 transfers amount. + References No definition available. + Details
Name: | pnbk_FairValueAssetsLevelOneToLevelThreeTransfersAmount
Namespace Prefix: | pnbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Maturing period of borrowings under short term repurchase agreements and other short term borrowings. + References No definition available. + Details
Name: | pnbk_MaturingPeriodOfBorrowingsUnderShortTermRepurchaseAgreementsAndOtherShortTermBorrowings
Namespace Prefix: | pnbk_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration