XML 38 R52.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Note 4 - Loans Receivable and Allowance for Loan Losses (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Note 4 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |
Maximum Period of Credit Extension of Construction Loans | 18 months |  |
Period for Charged Off of Open-End Credits | 180 days |  |
Period for Charged Off of Close-End Credits | 120 days |  |
Recorded Balance of Non-Accrual Loans | $ 866,000 pnbk_RecordedBalanceOfNonAccrualLoans | $ 12,300,000 pnbk_RecordedBalanceOfNonAccrualLoans |
Maximum Period for Charged Off of Consumer Installment Loans | 90 days |  |
Performance Period Under Loan Terms | 6 months |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | 279,000 us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing | 866,000 us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing |
Number of Loans Past Due Over 90 Days |  | 2 pnbk_NumberOfLoansPastDueOver90Days |
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans | 23,000 us-gaap_LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans | 310,000 us-gaap_LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans | 1,200,000 us-gaap_LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans
Impaired Financing Receivable, Recorded Investment | 11,724,000 us-gaap_ImpairedFinancingReceivableRecordedInvestment | 22,021,000 us-gaap_ImpairedFinancingReceivableRecordedInvestment |
Impaired Financing Receivable, Related Allowance | 7,000 us-gaap_ImpairedFinancingReceivableRelatedAllowance | 1,891,000 us-gaap_ImpairedFinancingReceivableRelatedAllowance |
Number of Borrowers | 14 pnbk_NumberOfBorrowers | 22 pnbk_NumberOfBorrowers |
Impaired Financing Receivable, Average Recorded Investment | 20,500,000 us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment | 30,800,000 us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment | 35,000,000 us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 11,717,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment | 14,482,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment |
Financing Receivable, Modifications, Number of Contracts | 1 us-gaap_FinancingReceivableModificationsNumberOfContracts2 | 2 us-gaap_FinancingReceivableModificationsNumberOfContracts2 |
Financing Receivable, Modifications, Recorded Investment | 1,131,000 us-gaap_FinancingReceivableModificationsRecordedInvestment | 2,188,000 us-gaap_FinancingReceivableModificationsRecordedInvestment |
Loans and Leases Receivable, Impaired, Commitment to Lend | 0 us-gaap_LoansAndLeasesReceivableImpairedCommitmentToLend | 0 us-gaap_LoansAndLeasesReceivableImpairedCommitmentToLend |
Financing Receivable, Modifications, Pre-Modification Recorded Investment | 2,439,000 us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2 | 4,730,000 us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2 |
Accrual Status [Member] |  |  |
Note 4 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |
Financing Receivable, Modifications, Number of Contracts |  | 1 us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = pnbk_AccrualStatusMember |
Financing Receivable, Modifications, Recorded Investment |  | 991,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = pnbk_AccrualStatusMember |
Non-Accrual Loans [Member] | Real Estate Construction to Permanent [Member] |  |  |
Note 4 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |
Financing Receivable, Modifications, Number of Contracts |  | 1 us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = pnbk_RealEstateConstructionToPermanentMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = pnbk_NonAccrualLoansMember |
Financing Receivable, Modifications, Recorded Investment |  | 1,197,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = pnbk_RealEstateConstructionToPermanentMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = pnbk_NonAccrualLoansMember |
Non-Accrual Loans [Member] |  |  |
Note 4 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |
Financing Receivable, Modifications, Number of Contracts |  | 1 us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = pnbk_NonAccrualLoansMember |
Financing Receivable, Modifications, Recorded Investment |  | 1,197,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = pnbk_NonAccrualLoansMember |
Restructured [Member] |  |  |
Note 4 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |
Financing Receivable, Modifications, Number of Contracts | 1 us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = pnbk_RestructuredMember |  |
Financing Receivable, Modifications, Recorded Investment | 1,200,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = pnbk_RestructuredMember |  |
Upgraded to Pass Impaired [Member] |  |  |
Note 4 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |
Financing Receivable, Modifications, Recorded Investment | 1,300,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = pnbk_UpgradedToPassImpairedMember |  |
Current as to Interest [Member] |  |  |
Note 4 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |
Number of Loans Past Due Over 90 Days |  | 1 pnbk_NumberOfLoansPastDueOver90Days / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = pnbk_CurrentAsToInterestMember |
Financing Receivable, Recorded Investment, Past Due |  | 841,000 us-gaap_FinancingReceivableRecordedInvestmentPastDue / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = pnbk_CurrentAsToInterestMember |
Current Within 60 Days as to Interest [Member] |  |  |
Note 4 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |
Financing Receivable, Recorded Investment, Past Due |  | 25,000 us-gaap_FinancingReceivableRecordedInvestmentPastDue / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = pnbk_CurrentWithin60DaysAsToInterestMember |
Non-Accrual Loans [Member] |  |  |
Note 4 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |
Impaired Financing Receivable, Interest Income, Cash Basis Method | 0 us-gaap_ImpairedFinancingReceivableInterestIncomeCashBasisMethod / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = pnbk_NonAccrualLoansMember | 198,000 us-gaap_ImpairedFinancingReceivableInterestIncomeCashBasisMethod / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = pnbk_NonAccrualLoansMember | 0 us-gaap_ImpairedFinancingReceivableInterestIncomeCashBasisMethod / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = pnbk_NonAccrualLoansMember
Downgraded [Member] | Real Estate Construction to Permanent [Member] |  |  |
Note 4 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |
Financing Receivable, Modifications, Number of Contracts |  | 2 us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = pnbk_DowngradedMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = pnbk_RealEstateConstructionToPermanentMember |
Downgraded [Member] | Construction to Permanent Real Estate Financing Receivable Loan One [Member] |  |  |
Note 4 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |
Financing Receivable, Modifications, Pre-Modification Recorded Investment |  | 3,700,000 us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2 / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = pnbk_DowngradedMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = pnbk_ConstructionToPermanentRealEstateFinancingReceivableLoanOneMember |
Downgraded [Member] | Construction to Permanent Real Estate Financing Receivable Loan Two [Member] |  |  |
Note 4 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |
Financing Receivable, Modifications, Pre-Modification Recorded Investment |  | 1,000,000 us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2 / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = pnbk_DowngradedMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = pnbk_ConstructionToPermanentRealEstateFinancingReceivableLoanTwoMember |
Upgraded as to Risk Rating [Member] | Construction to Permanent Real Estate Financing Receivable Loan One [Member] |  |  |
Note 4 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |
Financing Receivable, Modifications, Recorded Investment | 3,700,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = pnbk_UpgradedAsToRiskRatingMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = pnbk_ConstructionToPermanentRealEstateFinancingReceivableLoanOneMember |  |
Paid Off [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Note 4 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |
Financing Receivable, Modifications, Number of Contracts | 2 us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = pnbk_PaidOffMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  |
Paid Off [Member] | Commercial Portfolio Segment [Member] |  |  |
Note 4 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |
Financing Receivable, Modifications, Number of Contracts | 1 us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = pnbk_PaidOffMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember |  |
Paid Off [Member] | Residential Real Estate [Member] |  |  |
Note 4 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |
Financing Receivable, Modifications, Number of Contracts | 1 us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = pnbk_PaidOffMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialRealEstateMember |  |
Paid Off [Member] |  |  |
Note 4 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |
Financing Receivable, Modifications, Number of Contracts | 4 us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = pnbk_PaidOffMember |  |
Upgraded [Member] | Residential Real Estate [Member] |  |  |
Note 4 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |
Financing Receivable, Modifications, Recorded Investment | 347,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = pnbk_UpgradedMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialRealEstateMember |  |
Upgraded [Member] | Consumer Home Equity [Member] |  |  |
Note 4 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |
Financing Receivable, Modifications, Recorded Investment | 563,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = pnbk_UpgradedMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = pnbk_ConsumerHomeEquityMember |  |
Upgraded [Member] |  |  |
Note 4 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |
Financing Receivable, Modifications, Number of Contracts | 2 us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = pnbk_UpgradedMember |  |
Charged Off [Member] | Residential Real Estate [Member] |  |  |
Note 4 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |
Financing Receivable, Modifications, Number of Contracts | 1 us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = pnbk_ChargedOffMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialRealEstateMember |  |
Commercial Real Estate Portfolio Segment [Member] |  |  |
Note 4 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |
Maximum Percentage of Credit Extension Based on Market Value of Collateral | 75.00%pnbk_MaximumPercentageOfCreditExtensionBasedOnMarketValueOfCollateral / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  |
Impaired Financing Receivable, Recorded Investment | 7,398,000 us-gaap_ImpairedFinancingReceivableRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember | 7,766,000 us-gaap_ImpairedFinancingReceivableRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
Impaired Financing Receivable, Related Allowance |  | 31,000 us-gaap_ImpairedFinancingReceivableRelatedAllowance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 7,398,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember | 7,596,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
Financing Receivable, Modifications, Pre-Modification Recorded Investment | 2,439,000 us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  |
Proceeds from Financing Receivable Restructured Loan Paid Off | 3,900,000 pnbk_ProceedsFromFinancingReceivableRestructuredLoanPaidOff / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  |
Multi-family Real Estate [Member] |  |  |
Note 4 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |
Maximum Percentage of Credit Extension Based on Market Value of Collateral | 80.00%pnbk_MaximumPercentageOfCreditExtensionBasedOnMarketValueOfCollateral / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = pnbk_MultiFamilyRealEstateMember |  |
Construction Loans [Member] |  |  |
Note 4 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |
Percentage of Maximum Loan to Value | 65.00%pnbk_PercentageOfMaximumLoanToValue / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConstructionLoansMember |  |
Commercial Portfolio Segment [Member] |  |  |
Note 4 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |
Number of Loans Past Due Over 90 Days | 4 pnbk_NumberOfLoansPastDueOver90Days / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember |  |
Impaired Financing Receivable, Recorded Investment | 2,000 us-gaap_ImpairedFinancingReceivableRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember | 6,152,000 us-gaap_ImpairedFinancingReceivableRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember |
Impaired Financing Receivable, Related Allowance |  | 1,500,000 us-gaap_ImpairedFinancingReceivableRelatedAllowance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 2,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember | 2,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember |
Financing Receivable, Modifications, Number of Contracts | 1 us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember | 1 us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember |
Financing Receivable, Modifications, Recorded Investment | 1,131,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember | 991,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember |
Proceeds from Financing Receivable Restructured Loan Paid Off | 37,000 pnbk_ProceedsFromFinancingReceivableRestructuredLoanPaidOff / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember |  |
Real Estate Construction to Permanent [Member] |  |  |
Note 4 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |
Impaired Financing Receivable, Recorded Investment |  | 1,189,000 us-gaap_ImpairedFinancingReceivableRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = pnbk_RealEstateConstructionToPermanentMember |
Number of Borrowers |  | 1 pnbk_NumberOfBorrowers / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = pnbk_RealEstateConstructionToPermanentMember |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment |  | 1,189,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = pnbk_RealEstateConstructionToPermanentMember |
Financing Receivable, Modifications, Number of Contracts |  | 1 us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = pnbk_RealEstateConstructionToPermanentMember |
Financing Receivable, Modifications, Recorded Investment |  | 1,197,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = pnbk_RealEstateConstructionToPermanentMember |
Financing Receivable, Modifications, Pre-Modification Recorded Investment |  | 4,730,000 us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = pnbk_RealEstateConstructionToPermanentMember |
Residential Real Estate [Member] |  |  |
Note 4 - Loans Receivable and Allowance for Loan Losses (Details) [Line Items] |  |  |
Proceeds from Financing Receivable Restructured Loan Paid Off | 4,400,000 pnbk_ProceedsFromFinancingReceivableRestructuredLoanPaidOff / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialRealEstateMember |  |
Financing Receivable, Allowance for Credit Losses, Write-downs | $ 500,000 us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialRealEstateMember |  |

X
- Definition Maximum percentage of credit extension based on market value of collateral. + References No definition available. + Details
Name: | pnbk_MaximumPercentageOfCreditExtensionBasedOnMarketValueOfCollateral
Namespace Prefix: | pnbk_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum period for charged off of consumer installment loans. + References No definition available. + Details
Name: | pnbk_MaximumPeriodForChargedOffOfConsumerInstallmentLoans
Namespace Prefix: | pnbk_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum period of credit extension of construction loans. + References No definition available. + Details
Name: | pnbk_MaximumPeriodOfCreditExtensionOfConstructionLoans
Namespace Prefix: | pnbk_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | pnbk_Note4LoansReceivableandAllowanceforLoanLossesDetailsLineItems
Namespace Prefix: | pnbk_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of borrowers in loan transactions. + References No definition available. + Details
Name: | pnbk_NumberOfBorrowers
Namespace Prefix: | pnbk_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of loans over 90 days past due. + References No definition available. + Details
Name: | pnbk_NumberOfLoansPastDueOver90Days
Namespace Prefix: | pnbk_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of maximum loan to value. + References No definition available. + Details
Name: | pnbk_PercentageOfMaximumLoanToValue
Namespace Prefix: | pnbk_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Performance period under loan terms. + References No definition available. + Details
Name: | pnbk_PerformancePeriodUnderLoanTerms
Namespace Prefix: | pnbk_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period for charged off of close end credits. + References No definition available. + Details
Name: | pnbk_PeriodForChargedOffOfCloseEndCredits
Namespace Prefix: | pnbk_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period for charged off of open end credits + References No definition available. + Details
Name: | pnbk_PeriodForChargedOffOfOpenEndCredits
Namespace Prefix: | pnbk_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Proceeds from financing receivable restructured loan paid off. + References No definition available. + Details
Name: | pnbk_ProceedsFromFinancingReceivableRestructuredLoanPaidOff
Namespace Prefix: | pnbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Recorded balance of non accrual loans. + References No definition available. + Details
Name: | pnbk_RecordedBalanceOfNonAccrualLoans
Namespace Prefix: | pnbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of direct write-downs of financing receivables charged against the allowance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsNumberOfContracts2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Pre-modification amount of investment in financing receivables modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554 + Details
Name: | us-gaap_FinancingReceivableModificationsRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Recorded investment in financing receivables that are 90 days or more past due and still accruing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5111-111524 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Recorded Investment in financing receivables that are past due at the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953401-111524 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentPastDue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5258-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of interest income recognized on a cash-basis method of accounting that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableInterestIncomeCashBasisMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of allowance for credit losses related to recorded investment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableRelatedAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of investment in impaired financing receivables for which there is no related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Reflects the unfunded portion of contractual agreements to lend funds to borrowers for loans whose terms have been modified by troubled debt restructuring. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18794-111554 + Details
Name: | us-gaap_LoansAndLeasesReceivableImpairedCommitmentToLend
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Reflects the amount of additional interest income that would have been recorded if impaired or nonperforming loans were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18794-111554 + Details
Name: | us-gaap_LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=pnbk_ChargedOffMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=pnbk_CurrentAsToInterestMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=pnbk_CurrentWithin60DaysAsToInterestMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=pnbk_DowngradedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=pnbk_NonAccrualLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=pnbk_PaidOffMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=pnbk_UpgradedAsToRiskRatingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=pnbk_UpgradedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=pnbk_MultiFamilyRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=pnbk_RealEstateConstructionToPermanentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConstructionLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ResidentialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableTroubledDebtRestructuringAxis=pnbk_AccrualStatusMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableTroubledDebtRestructuringAxis=pnbk_NonAccrualLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableTroubledDebtRestructuringAxis=pnbk_RestructuredMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableTroubledDebtRestructuringAxis=pnbk_UpgradedToPassImpairedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |