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Note 4 - Revenue Recognition (Details Textual) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Apr. 30, 2023 | Jan. 31, 2023
Costs Incurred for Uncompleted Contracts, Anticipated Collection Period (Year) | 1 year |
Unbilled Receivables, Current | $ 11,907 | $ 11,634
Middle East [Member] |  |
Unbilled Receivables, Current | $ 11,900 | $ 11,600

X
- Definition Represents the duration of time within which costs incurred for uncompleted contracts are anticipated to be collected. + References No definition available. + Details
Name: | ppih_CostsIncurredForUncompletedContractsAnticipatedCollectionPeriod
Namespace Prefix: | ppih_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount received for services rendered and products shipped, but not yet billed, for non-contractual agreements due within one year or the normal operating cycle, if longer. + References No definition available. + Details
Name: | us-gaap_UnbilledReceivablesCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | srt_StatementGeographicalAxis=us-gaap_MiddleEastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |