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SUBSEQUENT EVENTS (Details Narrative) - Subsequent Event [Member] $ in Thousands	Oct. 24, 2016 USD ($)
Previously granted abatement	$ 1,200
Percentage of accrued penalties	100.00%
Remaining accrued penalty	$ 72

X

- Definition

It represents as a percentage of accrued penalties.

+ References

No definition available.

+ Details

Name:	ppsi_PercentageOfAccruedPenalties
Namespace Prefix:	ppsi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

It represents as a previously granted abatement.

+ References

No definition available.

+ Details

Name:	ppsi_PreviouslyGrantedAbatement
Namespace Prefix:	ppsi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

It represents as a remaining accrued penalty.

+ References

No definition available.

+ Details

Name:	ppsi_RemainingAccruedPenalty
Namespace Prefix:	ppsi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: