The amount of decrease in operating lease expense during the reporting period.

No definition available.

Name:	ppih_DecreaseInOperatingLeaseExpense
Namespace Prefix:	ppih_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of decrease in the current portion of operating lease liability during the reporting period.

+ References

No definition available.

+ Details

Name:	ppih_DecreaseInOperatingLeaseLiabilityCurrent
Namespace Prefix:	ppih_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of decrease in the non-current portion of the operating lease liability as of the reporting period.

+ References

No definition available.

+ Details

Name:	ppih_DecreaseInOperatingLeaseLiabilityNoncurrent
Namespace Prefix:	ppih_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of decrease in the operating lease right-of-use asset as of the reporting period.

+ References

No definition available.

+ Details

Name:	ppih_DecreaseInOperatingLeaseRightofuseAsset
Namespace Prefix:	ppih_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of cash outflow for principal payment and interest on finance lease liability.

+ References

No definition available.

+ Details

Name:	ppih_FinanceLeasePrincipalPaymentsAndInterestPaymentOnLiability
Namespace Prefix:	ppih_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Contractual interest rate for finance lease.

+ References

No definition available.

+ Details

Name:	ppih_InterestRateForFinanceLease
Namespace Prefix:	ppih_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the amount of payment expected to be made per year under operating lease of lessee.

+ References

No definition available.

+ Details

Name:	ppih_LesseeOperatingLeaseAnnualPayment
Namespace Prefix:	ppih_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Present value of lessee's discounted obligation for lease payments from finance lease, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479041/842-20-45-1

+ Details

Name:	us-gaap_FinanceLeaseLiabilityCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, after accumulated amortization, of right-of-use asset from finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479041/842-20-45-1

+ Details

Name:	us-gaap_FinanceLeaseRightOfUseAsset
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-3

+ Details

Name:	us-gaap_LesseeOperatingLeaseTermOfContract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of operating lease expense. Excludes sublease income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 4
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479041/842-20-45-4

+ Details

Name:	us-gaap_OperatingLeaseExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

+ Details

Name:	us-gaap_OperatingLeaseLiability
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's right to use underlying asset under operating lease.

+ References

+ Details

Name:	us-gaap_OperatingLeaseRightOfUseAsset
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_BalanceSheetLocationAxis=ppih_CurrentMaturitiesOfLongtermDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=ppih_FinanceVehicleEquipmentOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LeaseContractualTermAxis=ppih_AbuDhabiLandLeaseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Note 10 - Leases (Details Textual) $ in Thousands, د.إ in Millions, $ in Millions	3 Months Ended		12 Months Ended
	Apr. 30, 2023 USD ($)	Apr. 30, 2022 USD ($)	Jan. 31, 2023 USD ($)	Jan. 31, 2023 AED (د.إ)	Jan. 31, 2020 USD ($)	Jan. 31, 2020 CAD ($)
Finance Lease, Right-of-Use Asset, after Accumulated Amortization, Total	$ 400
Operating Lease, Liability	5,033		$ 5,164
Operating Lease, Right-of-Use Asset	4,338		4,527
Operating Lease, Expense	700	$ 900
Current Maturities of Long-term Debt [Member]
Finance Lease, Liability, Current	$ 100
Maximum [Member]
Lessee, Operating Lease, Term of Contract (Year)	30 years
Minimum [Member]
Lessee, Operating Lease, Term of Contract (Year)	1 year
Finance Vehicle Equipment, One [Member]
Finance Lease, Right-of-Use Asset, after Accumulated Amortization, Total					$ 800	$ 1.1
Interest Rate for Finance Lease					8.00%	8.00%
Finance Vehicle Equipment, One [Member] \| Maximum [Member]
Finance Lease, Principal Payments and Interest Payment on Liability					$ 100
Abu Dhabi Land Lease [Member]
Lessee, Operating Lease, Annual Payment	$ 800			د.إ 1.2
Decrease in Operating Lease Liability, Current	300
Decrease in Operating Lease Liability, Noncurrent	4,000
Decrease in Operating Lease Right-of-use Asset	$ 3,600
Decrease in Operating Lease Expense			$ 1,100