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Note 11 - Treasury Stock (Details Textual) - USD ($) $ in Millions | Jan. 31, 2024 | Dec. 07, 2022 | Oct. 04, 2021
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Share Repurchase Program, Authorized, Amount |  | $ 1 | $ 3
Stock Repurchase Program, Authorized Repurchase Amount Used | $ 1 |  |

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- 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

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- Definition Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 505 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481520/505-30-50-4 + Details
Name: | srt_StockRepurchaseProgramAuthorizedAmount1
Namespace Prefix: | srt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant