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Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Impaired Loans (USD $) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Dec. 31, 2014
With no related allowance recorded: |  |  |
With no related allowance recorded-Recorded Investment | $ 12,230,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment |  | $ 11,717,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
With no related allowance recorded-Unpaid Principal Balance | 13,573,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance |  | 13,511,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
With no related allowance recorded-Average Recorded Investment | 12,374,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment | 14,140,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment |
With no related allowance recorded-Interest Income Recognized | 131,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethod | 199,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethod |
With an allowance recorded: |  |  |
With related allowance recorded-Recorded Investment | 0 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment |  | 7,000 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
With related allowance recorded-Unpaid Principal Balance |  |  | 7,000 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
With related allowance recorded-Related Allowance |  |  | 7,000 us-gaap_ImpairedFinancingReceivableRelatedAllowance
With related allowance recorded-Average Recorded Investment | 2,000 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment | 7,160,000 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment |
Impaired loans | 12,230,000 us-gaap_ImpairedFinancingReceivableRecordedInvestment |  | 11,724,000 us-gaap_ImpairedFinancingReceivableRecordedInvestment
Unpaid Principal Balance | 13,573,000 us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance |  | 13,518,000 us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
Related Allowance |  |  | 7,000 us-gaap_ImpairedFinancingReceivableRelatedAllowance
Average Recorded Investment | 12,376,000 us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment | 21,300,000 us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment |
Interest Income Recognized | 131,000 us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod | 199,000 us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod |
Commercial Portfolio Segment [Member] |  |  |
With no related allowance recorded: |  |  |
With no related allowance recorded-Recorded Investment |  |  | 2,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialPortfolioSegmentMember
With no related allowance recorded-Unpaid Principal Balance | 101,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialPortfolioSegmentMember |  | 104,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialPortfolioSegmentMember
With no related allowance recorded-Average Recorded Investment | 1,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialPortfolioSegmentMember | 2,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialPortfolioSegmentMember |
With no related allowance recorded-Interest Income Recognized |  | 86,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethod / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialPortfolioSegmentMember |
With an allowance recorded: |  |  |
With related allowance recorded-Average Recorded Investment |  | 6,078,000 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialPortfolioSegmentMember |
Impaired loans |  |  | 2,000 us-gaap_ImpairedFinancingReceivableRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialPortfolioSegmentMember
Unpaid Principal Balance | 101,000 us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialPortfolioSegmentMember |  | 104,000 us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialPortfolioSegmentMember
Average Recorded Investment | 1,000 us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialPortfolioSegmentMember | 6,080,000 us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialPortfolioSegmentMember |
Interest Income Recognized |  | 86,000 us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialPortfolioSegmentMember |
Commercial Real Estate Portfolio Segment [Member] |  |  |
With no related allowance recorded: |  |  |
With no related allowance recorded-Recorded Investment | 8,272,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  | 7,398,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember
With no related allowance recorded-Unpaid Principal Balance | 9,113,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  | 8,249,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember
With no related allowance recorded-Average Recorded Investment | 8,296,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember | 7,941,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
With no related allowance recorded-Interest Income Recognized | 95,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethod / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember | 72,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethod / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
With an allowance recorded: |  |  |
With related allowance recorded-Average Recorded Investment |  | 158,000 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
Impaired loans | 8,272,000 us-gaap_ImpairedFinancingReceivableRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  | 7,398,000 us-gaap_ImpairedFinancingReceivableRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember
Unpaid Principal Balance | 9,113,000 us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  | 8,249,000 us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember
Average Recorded Investment | 8,296,000 us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember | 8,099,000 us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
Interest Income Recognized | 95,000 us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember | 72,000 us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
Real Estate Construction [Member] |  |  |
With no related allowance recorded: |  |  |
With no related allowance recorded-Unpaid Principal Balance | 287,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivablePortfolioSegmentAxis = pnbk_RealEstateConstructionMember |  | 732,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivablePortfolioSegmentAxis = pnbk_RealEstateConstructionMember
With an allowance recorded: |  |  |
With related allowance recorded-Average Recorded Investment |  | 260,000 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = pnbk_RealEstateConstructionMember |
Unpaid Principal Balance | 287,000 us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance / us-gaap_FinancingReceivablePortfolioSegmentAxis = pnbk_RealEstateConstructionMember |  | 732,000 us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance / us-gaap_FinancingReceivablePortfolioSegmentAxis = pnbk_RealEstateConstructionMember
Average Recorded Investment |  | 260,000 us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = pnbk_RealEstateConstructionMember |
Residential Portfolio Segment [Member] |  |  |
With no related allowance recorded: |  |  |
With no related allowance recorded-Recorded Investment | 3,406,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ResidentialPortfolioSegmentMember |  | 3,764,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ResidentialPortfolioSegmentMember
With no related allowance recorded-Unpaid Principal Balance | 3,433,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ResidentialPortfolioSegmentMember |  | 3,793,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ResidentialPortfolioSegmentMember
With no related allowance recorded-Average Recorded Investment | 3,525,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ResidentialPortfolioSegmentMember | 4,821,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ResidentialPortfolioSegmentMember |
With no related allowance recorded-Interest Income Recognized | 32,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethod / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ResidentialPortfolioSegmentMember | 32,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethod / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ResidentialPortfolioSegmentMember |
With an allowance recorded: |  |  |
With related allowance recorded-Average Recorded Investment |  | 662,000 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ResidentialPortfolioSegmentMember |
Impaired loans | 3,406,000 us-gaap_ImpairedFinancingReceivableRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ResidentialPortfolioSegmentMember |  | 3,764,000 us-gaap_ImpairedFinancingReceivableRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ResidentialPortfolioSegmentMember
Unpaid Principal Balance | 3,433,000 us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ResidentialPortfolioSegmentMember |  | 3,793,000 us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ResidentialPortfolioSegmentMember
Average Recorded Investment | 3,525,000 us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ResidentialPortfolioSegmentMember | 5,483,000 us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ResidentialPortfolioSegmentMember |
Interest Income Recognized | 32,000 us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ResidentialPortfolioSegmentMember | 32,000 us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ResidentialPortfolioSegmentMember |
Consumer Portfolio Segment [Member] |  |  |
With no related allowance recorded: |  |  |
With no related allowance recorded-Recorded Investment | 552,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ConsumerPortfolioSegmentMember |  | 553,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ConsumerPortfolioSegmentMember
With no related allowance recorded-Unpaid Principal Balance | 639,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ConsumerPortfolioSegmentMember |  | 633,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ConsumerPortfolioSegmentMember
With no related allowance recorded-Average Recorded Investment | 552,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ConsumerPortfolioSegmentMember | 588,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ConsumerPortfolioSegmentMember |
With no related allowance recorded-Interest Income Recognized | 4,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethod / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ConsumerPortfolioSegmentMember | 9,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethod / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ConsumerPortfolioSegmentMember |
With an allowance recorded: |  |  |
With related allowance recorded-Recorded Investment |  |  | 7,000 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ConsumerPortfolioSegmentMember
With related allowance recorded-Unpaid Principal Balance |  |  | 7,000 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ConsumerPortfolioSegmentMember
With related allowance recorded-Related Allowance |  |  | 7,000 us-gaap_ImpairedFinancingReceivableRelatedAllowance / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ConsumerPortfolioSegmentMember
With related allowance recorded-Average Recorded Investment | 2,000 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ConsumerPortfolioSegmentMember | 2,000 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ConsumerPortfolioSegmentMember |
Impaired loans | 552,000 us-gaap_ImpairedFinancingReceivableRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ConsumerPortfolioSegmentMember |  | 560,000 us-gaap_ImpairedFinancingReceivableRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ConsumerPortfolioSegmentMember
Unpaid Principal Balance | 639,000 us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ConsumerPortfolioSegmentMember |  | 640,000 us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ConsumerPortfolioSegmentMember
Related Allowance |  |  | 7,000 us-gaap_ImpairedFinancingReceivableRelatedAllowance / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ConsumerPortfolioSegmentMember
Average Recorded Investment | 554,000 us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ConsumerPortfolioSegmentMember | 590,000 us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ConsumerPortfolioSegmentMember |
Interest Income Recognized | 4,000 us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ConsumerPortfolioSegmentMember | 9,000 us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod / us-gaap_FinancingReceivablePortfolioSegmentAxis = us-gaap_ConsumerPortfolioSegmentMember |
Construction to Permanent [Member] |  |  |
With no related allowance recorded: |  |  |
With no related allowance recorded-Average Recorded Investment |  | $ 788,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivablePortfolioSegmentAxis = pnbk_ConstructionToPermanentMember |

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- 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 17 -URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5258-111524 Reference 2: 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=49124121&loc=d3e5212-111524 + Details
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