Note 15 - Subsequent Events (Details Textual) - USD ($) $ in Millions	Jun. 07, 2022	Apr. 30, 2022	Jan. 31, 2022
Accounts Receivable, Outstanding for Several Years		$ 3.6	$ 3.6
Subsequent Event [Member]
Proceeds from Collection of Accounts Receivable Outstanding for Several Years	$ 0.9

Represents the proceeds received during the period from the collection of accounts receivable that have been outstanding for several years.

No definition available.

Name:	ppih_ProceedsFromCollectionOfAccountsReceivableOutstandingForSeveralYears
Namespace Prefix:	ppih_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration