| **Income Taxes Income Tax Expense Components (Details) (USD $)In Thousands, unless otherwise specified**              | 12 Months Ended                                                                                                                                                                              |
|-----------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
||
| **Effective Income Tax Rate Reconciliation, Nondeductible Expense, Depreciation and Amortization, Amount [Abstract]** |                                                                                                                                                                                         |   |   |
| Amortization of investment tax credits                                                                                | $ (209)us-gaap_IncomeTaxReconciliationTaxCreditsInvestment                                                                                                                                   | $ (267)us-gaap_IncomeTaxReconciliationTaxCreditsInvestment | $ (334)us-gaap_IncomeTaxReconciliationTaxCreditsInvestment |
| Federal Total                                                                                                         | 78,836us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations                                                                                                                             | 72,860us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations | 64,950us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations |
| State Total                                                                                                           | 15,982us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations                                                                                                                       | 13,086us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations | 13,267us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations |
| Regulated Operation [Member]                                                                                          |                                                                                                                                                                                         |   |   |
| **Income Tax Table Continuing Operations [Line Items]**                                                               |                                                                                                                                                                                         |   |   |
| Current Federal Tax Expense (Benefit)                                                                                 | (1,653)us-gaap_CurrentFederalTaxExpenseBenefit/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_RegulatedOperationMember                                                                      | (3,032)us-gaap_CurrentFederalTaxExpenseBenefit/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_RegulatedOperationMember | (29,062)us-gaap_CurrentFederalTaxExpenseBenefit/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_RegulatedOperationMember |
| Current State Tax Expense (Benefit)                                                                                   | 950us-gaap_CurrentStateAndLocalTaxExpenseBenefit/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_RegulatedOperationMember                                                                    | 919us-gaap_CurrentStateAndLocalTaxExpenseBenefit/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_RegulatedOperationMember | 1,857us-gaap_CurrentStateAndLocalTaxExpenseBenefit/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_RegulatedOperationMember |
| Deferred Federal Income Tax Expense (Benefit)                                                                         | 70,654us-gaap_DeferredFederalIncomeTaxExpenseBenefit/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_RegulatedOperationMember                                                                | 67,885us-gaap_DeferredFederalIncomeTaxExpenseBenefit/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_RegulatedOperationMember | 86,496us-gaap_DeferredFederalIncomeTaxExpenseBenefit/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_RegulatedOperationMember |
| Deferred State Income Tax Expense (Benefit)                                                                           | 13,434us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_RegulatedOperationMember                                                          | 11,829us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_RegulatedOperationMember | 10,144us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_RegulatedOperationMember |
| **Effective Income Tax Rate Reconciliation, Nondeductible Expense, Depreciation and Amortization, Amount [Abstract]** |                                                                                                                                                                                         |   |   |
| Amortization of investment tax credits                                                                                | (209)us-gaap_IncomeTaxReconciliationTaxCreditsInvestment/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_RegulatedOperationMember                                                            | (267)us-gaap_IncomeTaxReconciliationTaxCreditsInvestment/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_RegulatedOperationMember | (334)us-gaap_IncomeTaxReconciliationTaxCreditsInvestment/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_RegulatedOperationMember |
| Federal Total                                                                                                         | 68,792us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_RegulatedOperationMember                                                    | 64,586us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_RegulatedOperationMember | 57,100us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_RegulatedOperationMember |
| State Total                                                                                                           | 14,384us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_RegulatedOperationMember                                              | 12,748us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_RegulatedOperationMember | 12,001us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_RegulatedOperationMember |
| Unregulated Operation [Member]                                                                                        |                                                                                                                                                                                         |   |   |
| **Income Tax Table Continuing Operations [Line Items]**                                                               |                                                                                                                                                                                         |   |   |
| Current Federal Tax Expense (Benefit)                                                                                 | 4,233us-gaap_CurrentFederalTaxExpenseBenefit/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_UnregulatedOperationMember                                                                      | 6,049us-gaap_CurrentFederalTaxExpenseBenefit/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_UnregulatedOperationMember | 5,636us-gaap_CurrentFederalTaxExpenseBenefit/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_UnregulatedOperationMember |
| Current State Tax Expense (Benefit)                                                                                   | 870us-gaap_CurrentStateAndLocalTaxExpenseBenefit/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_UnregulatedOperationMember                                                                  | 984us-gaap_CurrentStateAndLocalTaxExpenseBenefit/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_UnregulatedOperationMember | 1,027us-gaap_CurrentStateAndLocalTaxExpenseBenefit/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_UnregulatedOperationMember |
| Deferred Federal Income Tax Expense (Benefit)                                                                         | 5,811us-gaap_DeferredFederalIncomeTaxExpenseBenefit/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_UnregulatedOperationMember                                                               | 2,225us-gaap_DeferredFederalIncomeTaxExpenseBenefit/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_UnregulatedOperationMember | 2,214us-gaap_DeferredFederalIncomeTaxExpenseBenefit/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_UnregulatedOperationMember |
| Deferred State Income Tax Expense (Benefit)                                                                           | 728us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_UnregulatedOperationMember                                                           | (646)us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_UnregulatedOperationMember | 239us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_UnregulatedOperationMember |
| **Effective Income Tax Rate Reconciliation, Nondeductible Expense, Depreciation and Amortization, Amount [Abstract]** |                                                                                                                                                                                         |   |   |
| Federal Total                                                                                                         | 10,044us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_UnregulatedOperationMember                                                  | 8,274us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_UnregulatedOperationMember | 7,850us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_UnregulatedOperationMember |
| State Total                                                                                                           | 1,598us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_UnregulatedOperationMember                                             | 338us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_UnregulatedOperationMember | 1,266us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_UnregulatedOperationMember |
| Domestic Tax Authority [Member] | NOL Carryforward 1 [Member]                                                         |                                                                                                                                                                                         |   |   |
| **Income Tax Table Continuing Operations [Line Items]**                                                               |                                                                                                                                                                                         |   |   |
| Deferred Federal Income Tax Expense (Benefit)                                                                         | $ 28,600us-gaap_DeferredFederalIncomeTaxExpenseBenefit/ us-gaap_IncomeTaxAuthorityAxis= us-gaap_DomesticCountryMember/ pny_NetOperatingLossCarryforwardsNameAxis= pny_NolCarryforward1Member | $ (62,300)us-gaap_DeferredFederalIncomeTaxExpenseBenefit/ us-gaap_IncomeTaxAuthorityAxis= us-gaap_DomesticCountryMember/ pny_NetOperatingLossCarryforwardsNameAxis= pny_NolCarryforward1Member |   |

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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.
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| - Definition
Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.
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| - Definition
Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations.
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| - Definition
Amount of current and deferred federal income tax expense (benefit) attributable to income (loss) from continuing operations.
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| - Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to investment tax credit.
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of state and local current and deferred income tax expense (benefit) attributable to continuing operations.
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