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Debt (Narrative) (Canadian Credit Facilities) (Details)			3 Months Ended										3 Months Ended
	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Mar. 31, 2015 Canadian Credit Facilities (Facility C) USD ($)	Mar. 31, 2015 Canadian Credit Facilities (Facility C) CAD	Jun. 30, 2013 Canadian Credit Facilities (Facility C) CAD	Mar. 31, 2015 Canadian Credit Facilities (Facility B) USD ($)	Jun. 30, 2013 Canadian Credit Facilities (Facility B) CAD	Mar. 31, 2015 Canadian Credit Facilities (Facility A) USD ($)	Jun. 30, 2013 Canadian Credit Facilities (Facility A) CAD	Mar. 31, 2015 Term Credit Facilities [Member] USD ($)	Jun. 30, 2013 Term Credit Facilities [Member] USD ($)	Jun. 30, 2013 Term Credit Facilities [Member] CAD	Mar. 31, 2015 Base Rate Plus Funds Borrowed in USD [Member] Minimum [Member] Canadian Credit Facilities (Facility C)	Mar. 31, 2015 Base Rate Plus Funds Borrowed in USD [Member] Maximum [Member] Canadian Credit Facilities (Facility C)	Mar. 31, 2015 Base Rate Plus Funds Borrowed in CAD [Member] Canadian Credit Facilities (Facility B)	Mar. 31, 2015 Base Rate Plus Funds Borrowed in CAD [Member] Minimum [Member] Canadian Credit Facilities (Facility C)	Mar. 31, 2015 Base Rate Plus Funds Borrowed in CAD [Member] Maximum [Member] Canadian Credit Facilities (Facility C)	Mar. 31, 2015 Base Rate Plus Funds Borrowed in USD or CAD [Member] Canadian Credit Facilities (Facility A)	Mar. 31, 2015 LIBOR Plus Funds Borrowed In USD [Member] Canadian Credit Facilities (Facility A)	Mar. 31, 2015 LIBOR Plus Funds Borrowed In USD [Member] Minimum [Member] Canadian Credit Facilities (Facility C)	Mar. 31, 2015 LIBOR Plus Funds Borrowed In USD [Member] Maximum [Member] Canadian Credit Facilities (Facility C)
Line of Credit Facility [Line Items]
Credit facility, borrowing capacity					10,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = ppsi_CanadianCreditFacilitiesCMember		2,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = ppsi_CanadianCreditFacilitiesBMember		10,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = ppsi_CanadianCreditFacilitiesAMember		$ 17,400,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = us-gaap_LineOfCreditMember	22,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = us-gaap_LineOfCreditMember
Canadian facilities secured by a first-ranking lien												30,000,000ppsi_LineOfCreditFacilitySecuredAmount / us-gaap_CreditFacilityAxis = us-gaap_LineOfCreditMember
Repayments of lines of credit			4,000,000us-gaap_RepaymentsOfLinesOfCredit / us-gaap_CreditFacilityAxis = ppsi_CanadianCreditFacilitiesCMember	5,000,000us-gaap_RepaymentsOfLinesOfCredit / us-gaap_CreditFacilityAxis = ppsi_CanadianCreditFacilitiesCMember
Interest rate spread													1.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = ppsi_CanadianCreditFacilitiesCMember / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_VariableRateAxis = ppsi_BaseRatePlusFundsBorrowedInUnitedStatesDollarsMember	1.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = ppsi_CanadianCreditFacilitiesCMember / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_VariableRateAxis = ppsi_BaseRatePlusFundsBorrowedInUnitedStatesDollarsMember	1.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = ppsi_CanadianCreditFacilitiesBMember / us-gaap_VariableRateAxis = ppsi_BaseRatePlusFundsBorrowedInCadMember	1.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = ppsi_CanadianCreditFacilitiesCMember / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_VariableRateAxis = ppsi_BaseRatePlusFundsBorrowedInCadMember	1.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = ppsi_CanadianCreditFacilitiesCMember / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_VariableRateAxis = ppsi_BaseRatePlusFundsBorrowedInCadMember	0.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = ppsi_CanadianCreditFacilitiesAMember / us-gaap_VariableRateAxis = ppsi_BaseRatePlusFundsBorrowedInUsdOrCadMember	2.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = ppsi_CanadianCreditFacilitiesAMember / us-gaap_VariableRateAxis = ppsi_LondonInterbankOfferedRatePlusFundsBorrowedInUnitesStatesDollarsMember	2.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = ppsi_CanadianCreditFacilitiesCMember / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_VariableRateAxis = ppsi_LondonInterbankOfferedRatePlusFundsBorrowedInUnitesStatesDollarsMember	2.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = ppsi_CanadianCreditFacilitiesCMember / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_VariableRateAxis = ppsi_LondonInterbankOfferedRatePlusFundsBorrowedInUnitesStatesDollarsMember
Credit facilities amount outstanding	$ 7,298,000us-gaap_LineOfCredit	$ 6,860,000us-gaap_LineOfCredit	$ 1,000,000us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = ppsi_CanadianCreditFacilitiesCMember			$ 700,000us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = ppsi_CanadianCreditFacilitiesBMember		$ 0us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = ppsi_CanadianCreditFacilitiesAMember		$ 1,700,000us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = us-gaap_LineOfCreditMember

X

- Definition

Details pertaining to canadian facilities secured by a first-ranking lien.

+ References

No definition available.

+ Details

Name:	ppsi_LineOfCreditFacilitySecuredAmount
Namespace Prefix:	ppsi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ 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 210.9-03.16)

-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 02

-Paragraph 19, 20, 22

-Article 5



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- Details

Name:	us-gaap_LineOfCreditFacilityLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(f))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph f

-Article 4



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration