Refers to percent of earnings before income taxes depreciation and amortization benchmark ratio.

No definition available.

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Namespace Prefix:	ppsi_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Refers to percentage of minimum fixed coverage ratio.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Percentage of ownership in subsidiary per agreement as collateral.

+ References

No definition available.

+ Details

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Namespace Prefix:	ppsi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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Period Type:	duration

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of the frequency of periodic payments (monthly, quarterly, annual).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Period Type:	duration

- Definition

Amount of the required periodic payments applied to principal.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of payment greater than the preceding installment payments to be paid at final maturity date of debt.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: 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

Reference 3: 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

+ Details

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

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

- 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

+ Details

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

- Details

Name:	us-gaap_CreditFacilityAxis=ppsi_RevolvingCreditFacilityUSMember
Namespace Prefix:
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Balance Type:
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- Details

Name:	us-gaap_StatementScenarioAxis=us-gaap_ScenarioPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=ppsi_UnitedStatesCreditFacilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_PrimeRateMember
Namespace Prefix:
Data Type:	na
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Period Type:

- Details

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- Details

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- Details

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Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
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- Details

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DEBT (Details Narrative 1) $ in Thousands		3 Months Ended	6 Months Ended
DEBT (Details Narrative 1) $ in Thousands	Mar. 15, 2017 USD ($)	Dec. 31, 2014	Jun. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)	Apr. 30, 2016 USD ($)	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 02, 2014 USD ($)
Line of Credit Facility [Line Items]
Credit facilities amount outstanding			$ 19,699	$ 17,689
U.S. Credit Facilities [Member]
Line of Credit Facility [Line Items]
Maximum Credit Facilities Amount to Borrow	$ 20,100				$ 19,100					$ 5,000
Percentage of subsidiary shares used to secure borrowings in facility			65.00%
Credit facilities amount outstanding			$ 18,800
Minimum fixed charge coverage ratio		1.10
U.S. Credit Facilities [Member] \| Scenario, Plan [Member]
Line of Credit Facility [Line Items]
EBITDA benchmark ratio		3.15				2.75	3.65	3.25	3.15
Minimum fixed charge coverage ratio			1.25
U.S. Credit Facilities A [Member]
Line of Credit Facility [Line Items]
Maximum Credit Facilities Amount to Borrow	$ 15,000				14,000
Credit facilities amount outstanding			$ 14,200
U.S. Credit Facilities A [Member] \| Bank's Prime Rate [Member]
Line of Credit Facility [Line Items]
Interest rate spread			1.00%
Variable rate description			bank’s prime rate on U.S. prime rate loans
U.S. Credit Facilities A [Member] \| LIBOR [Member]
Line of Credit Facility [Line Items]
Interest rate spread			2.25%
Variable rate description			adjusted LIBOR rate on Eurodollar loans
U.S. Credit Facilities B [Member]
Line of Credit Facility [Line Items]
Maximum Credit Facilities Amount to Borrow					5,000
Frequency of payments			Quarterly
Quarterly principal payment			$ 31
Credit facilities amount outstanding			4,600
Balloon payment			$ 4,438
U.S. Credit Facilities B [Member] \| LIBOR [Member]
Line of Credit Facility [Line Items]
Interest rate spread			2.50%
Variable rate description			adjusted LIBOR rate on Eurodollar loans
U.S. Credit Facilities B [Member] \| U.S. Base Rate [Member]
Line of Credit Facility [Line Items]
Interest rate spread			1.25%
Variable rate description			bank’s prime rate on U.S. prime rate loans
U.S. Credit Facility - MasterCard [Member]
Line of Credit Facility [Line Items]
Maximum Credit Facilities Amount to Borrow					$ 100
Credit Facility B [Member]
Line of Credit Facility [Line Items]
Frequency of payments	Quarterly
Quarterly principal payment	$ 31