XML 67 R51.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Income Taxes (Details) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2013 | Dec. 31, 2011
Income Taxes (Textual) [Abstract] |  |
Valuation allowance against deferred tax asset | $ 15,800,000 |
Annual limitation on use of pre-ownership change losses | 284,000 |
Pre-ownership change losses | 36,200,000 |
Carryforward period of ownership | 20 years |
Utilize pre-ownership change losses | 5,600,000 |
Write-off of deferred tax assets |  | $ 10,400,000
Percentage Of Change In Ownership For Operating Loss Carryforward | 50.00% |

X
- Definition Annual limitation due to impact of recent ownership change. + References No definition available. + Details
Name: | pnbk_AnnualLimitationDueToImpactOfRecentOwnershipChange
Namespace Prefix: | pnbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Deferred tax assets net operating loss write off. + References No definition available. + Details
Name: | pnbk_DeferredTaxAssetsNetOperatingLossWriteOff
Namespace Prefix: | pnbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Definition Net operating loss carryforward period. + References No definition available. + Details
Name: | pnbk_NetOperatingLossCarryforwardPeriod
Namespace Prefix: | pnbk_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Change in ownership for operating loss carryforward. + References No definition available. + Details
Name: | pnbk_PercentageOfChangeInOwnershipForOperatingLossCarryforward
Namespace Prefix: | pnbk_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Possible utilization amount of pre change net operating losses and net built in deduction. + References No definition available. + Details
Name: | pnbk_PossibleUtilizationAmountOfPreChangeNetOperatingLossesAndNetBuiltInDeduction
Namespace Prefix: | pnbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 43-49 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 17 -Subparagraph e -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_DeferredTaxAssetsValuationAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The sum of domestic, foreign and state and local operating loss carryforwards, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 48 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_OperatingLossCarryforwards
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant