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Note 7 - Deposits (Details) - Summary of the Company’s Deposits (USD $) | Dec. 31, 2014 | Dec. 31, 2013
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Summary of the Company’s Deposits [Abstract] |  |
Non-interest bearing | $ 63,398,000 us-gaap_NoninterestBearingDepositLiabilities | $ 55,358,000 us-gaap_NoninterestBearingDepositLiabilities
Interest bearing |  |
NOW | 26269.00%us-gaap_WeightedAverageRateDomesticDepositNoticeOfWithdrawal | 28618.00%us-gaap_WeightedAverageRateDomesticDepositNoticeOfWithdrawal
NOW | 0.0001 us-gaap_DepositsNegotiableOrderOfWithdrawalNOW | 0.0001 us-gaap_DepositsNegotiableOrderOfWithdrawalNOW
Savings | 93790.00%us-gaap_WeightedAverageRateDomesticDepositSavings | 80983.00%us-gaap_WeightedAverageRateDomesticDepositSavings
Savings | 0.0048 us-gaap_DepositsSavingsDeposits | 0.0030 us-gaap_DepositsSavingsDeposits
Money market | 24650.00%us-gaap_WeightedAverageRateDomesticDepositMoneyMarket | 29310.00%us-gaap_WeightedAverageRateDomesticDepositMoneyMarket
Money market | 0.0004 us-gaap_DepositsMoneyMarketDeposits | 0.0004 us-gaap_DepositsMoneyMarketDeposits
Time certificates, less than $100,000 | 106340.00%pnbk_WeightedAverageInterestRateOfTimeDepositsLessThanOneHundredThousand | 129548.00%pnbk_WeightedAverageInterestRateOfTimeDepositsLessThanOneHundredThousand
Time certificates, less than $100,000 | 0.0073 us-gaap_TimeDepositsLessThan100000 | 0.0105 us-gaap_TimeDepositsLessThan100000
Time certificates, $100,000 or more | 97876.00%us-gaap_WeightedAverageInterestRateOfTimeDeposits100000OrMore | 106387.00%us-gaap_WeightedAverageInterestRateOfTimeDeposits100000OrMore
Time certificates, $100,000 or more | 0.0087 us-gaap_TimeDeposits100000OrMore | 0.0109 us-gaap_TimeDeposits100000OrMore
Brokered Deposits | 30710.00%us-gaap_WeightedAverageRateDomesticDepositBrokered |
Brokered Deposits | 0.0047 us-gaap_InterestBearingDomesticDepositBrokered |
Total interest bearing | 379635.00%pnbk_WeightedAverageRateDomesticDepositInterestBearing | 374846.00%pnbk_WeightedAverageRateDomesticDepositInterestBearing
Total interest bearing | 0.0059 us-gaap_InterestBearingDepositLiabilities | 0.0074 us-gaap_InterestBearingDepositLiabilities
Total Deposits | 443033.00%us-gaap_WeightedAverageRateDomesticDeposit | 430204.00%us-gaap_WeightedAverageRateDomesticDeposit
Total Deposits | $ 0.0050 us-gaap_Deposits | $ 0.0065 us-gaap_Deposits

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- Definition The weighted average interest rate of time deposits less than $100,000. + References No definition available. + Details
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- Definition The weighted average interest rate for all interest bearing domestic deposit liabilities. + References No definition available. + Details
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- Definition The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.12) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 9 + Details
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- Definition Amount of deposits in accounts that offer many of the same services as checking accounts although transactions may be somewhat more limited, share some of the characteristics of a money market fund and are insured by the Federal government, also known as money market accounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.12) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount of deposits in interest-bearing transaction accounts at banks or savings and loans, that are restricted in regard to ownership and can usually only be held by individuals, nonprofit entities and governments. Negotiable order of withdrawal accounts differ from money market demand accounts as they typically have higher reserve requirements and no limit on the number of checks that can be written. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.12) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount of interest bearing deposits with no stated maturity, which may include passbook and statement savings accounts and money-market deposit accounts (MMDAs). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.12) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition The aggregate of all domestic and foreign interest-bearing deposit liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.12) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 9 + Details
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- Definition Amount of interest-bearing domestic third-party deposits placed by or through the assistance of a deposit broker, also known as brokered deposit liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.12) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 9 + Details
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- Definition The aggregate amount of all domestic and foreign noninterest-bearing deposits liabilities held by the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.12) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 9 + Details
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- Definition The aggregate amount of domestic and foreign time deposit liabilities (including certificates of deposits, individual retirement accounts and open accounts) in denominations of $100,000 or more. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 405 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6479006&loc=d3e64164-112818 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Industry Guide -Number 3 -Section V -Paragraph A -Subparagraph 4 + Details
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- Definition The aggregate amount of domestic or foreign time deposits (including certificates of deposits, individual retirement accounts and open accounts) that total to less than $100,000. + References No definition available. + Details
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- Definition The weighted average interest rate of all domestic and foreign time deposits (including certificates of deposits, individual retirement accounts and open accounts) in denominations of $100,000 or more, at the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Industry Guide -Number 3 -Section V -Paragraph A -Subparagraph 4 + Details
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- Definition The weighted average interest rate for all domestic deposit liabilities. + References No definition available. + Details
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- Definition The weighted average interest rate for domestic money market demand account deposit liabilities. + References No definition available. + Details
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- Definition The weighted average interest rate for domestic savings deposit liabilities. + References No definition available. + Details
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