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COMMITMENTS AND CONTINGENCIES (Details Narrative) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Lease extended term (in years)	10 years
Assets under finance leases	$ 3,339	$ 2,900
Accumulated amortization associated with finance leases	$ 880	$ 418
Minimum [Member]
Remaining lease term (in years)	1 year
Maximum [Member]
Remaining lease term (in years)	7 years

X

- Definition

It represents lease extended term.

+ References

No definition available.

+ Details

Name:	ppsi_WeightedAverageRemainingLeaseExtendTerm
Namespace Prefix:	ppsi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Weighted average remaining lease term , in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	ppsi_WeightedAverageRemainingLeaseTerm
Namespace Prefix:	ppsi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Accumulated amortization of deferred income and initial direct costs pertaining to direct financing leases, which resulted from producing constant periodic rates of return on the net investments in the leases over their respective lease terms.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 35
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=77915205&loc=d3e43734-112732

+ Details

Name:	us-gaap_CapitalLeasesNetInvestmentInDirectFinancingLeasesAccumulatedAmortization
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of lessee's right to use underlying asset under finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

+ Details

Name:	us-gaap_FinanceLeaseRightOfUseAsset
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Period Type: