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Note 4 - Revenue Recognition (Details Textual) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Oct. 31, 2025 | Jan. 31, 2025
Costs Incurred for Uncompleted Contracts, Anticipated Collection Period (Year) | 1 year |
Unbilled Receivables, Current | $ 28,453 | $ 18,936

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