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v2.4.1.9

Shareholders' Equity (Narrative) (Details) (USD $) | 3 Months Ended | 9 Months Ended | 1 Months Ended
--- | --- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Sep. 30, 2014 | Dec. 31, 2014
Common stock, par value (in dollars per share) | $ 0.001 us-gaap_CommonStockParOrStatedValuePerShare |  |  | 0.001 us-gaap_CommonStockParOrStatedValuePerShare
Common stock, outstanding shares | 7,405,962 us-gaap_CommonStockSharesOutstanding |  |  |
Outstanding purchase of warrants (in shares) | 280,600 us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights |  |  |
Warrants exercised | 0 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised |  |  |
Stock-based compensation expense | $ 60,000 us-gaap_ShareBasedCompensation | $ 36,000 us-gaap_ShareBasedCompensation |  |
Stock-based compensation expense unrecognized in the statement of earnings | 376,000 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions |  |  |
Foreign currency translation adjustments | $ (1,508,000)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax | $ (676,000)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax |  |
Warrants Exercise Price $15.43 [Member] |  |  |  |
Outstanding purchase of warrants (in shares) | 230,000 us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights / us-gaap_ClassOfWarrantOrRightAxis = ppsi_WarrantsExercisePriceOneMember |  |  |
Warrant expiration date range start | Apr. 26, 2015 |  |  |
Warrant expiration date range end | Apr. 30, 2015 |  |  |
Warrants Exercise Price $7.00 [Member] |  |  |  |
Outstanding purchase of warrants (in shares) | 50,600 us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights / us-gaap_ClassOfWarrantOrRightAxis = ppsi_WarrantsExercisePriceTwoMember |  |  |
Strike price of warrants outstanding | $ 7.00 us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 / us-gaap_ClassOfWarrantOrRightAxis = ppsi_WarrantsExercisePriceTwoMember |  |  |
Warrant expiration date range end |  |  | Sep. 18, 2018 |
Weighted Average [Member] |  |  |  |
Strike price of warrants outstanding | $ 13.91 us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 / us-gaap_RangeAxis = us-gaap_WeightedAverageMember |  |  |
Weighted Average [Member] | Warrants Exercise Price $15.43 [Member] |  |  |  |
Strike price of warrants outstanding | $ 15.43 us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 / us-gaap_ClassOfWarrantOrRightAxis = ppsi_WarrantsExercisePriceOneMember / us-gaap_RangeAxis = us-gaap_WeightedAverageMember |  |  |
2011 Long-Term Incentive Plan [Member] |  |  |  |
Shares available for future grants |  |  | 320,600 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant / us-gaap_PlanNameAxis = ppsi_LongTermIncentivePlanTwentyElevenMember |
Titan Energy Worldwide Inc. [Member] |  |  |  |
Business acquisition, equity interest issued or issuable, number of shares |  |  |  | 233,707 us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / us-gaap_BusinessAcquisitionAxis = ppsi_TitanEnergyWorldwideIncorporatedMember

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