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v3.20.1

Note 1 - Business Information (Details Textual) | 12 Months Ended
--- | ---
Jan. 31, 2020 | Jan. 31, 2019
Number of Reportable Segments | 1 |
Foreign Sales | 55.40% | 61.00%

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- Definition Foreign sales - or foreign customers + References No definition available. + Details
Name: | ppih_ForeignSales
Namespace Prefix: | ppih_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8672-108599 + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration