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Note 14 - Treasury Stock (Details Textual) - USD ($) $ in Millions | Jul. 31, 2022 | Oct. 04, 2021
--- | --- | ---
Stock Repurchase Program, Authorized Amount |  | $ 3
Stock Repurchase Program, Authorized Repurchase Amount Used | $ 2 |

X
- Definition Amount used of the stock repurchase plan authorized. + References No definition available. + Details
Name: | ppih_StockRepurchaseProgramAuthorizedRepurchaseAmountUsed
Namespace Prefix: | ppih_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramAuthorizedAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant