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Note 6 - Leases (Details Textual) $ in Thousands, د.إ in Millions, $ in Millions	12 Months Ended
	Jan. 31, 2023 USD ($)	Jan. 31, 2023 AED (د.إ)	Jan. 31, 2022 USD ($)	Jan. 31, 2020 USD ($)	Jan. 31, 2020 CAD ($)
Operating Lease, Liability, Total	$ 5,164		$ 12,766
Operating Lease, Right-of-Use Asset	4,527		11,213
Finance Lease, Liability, Total	164		530
Operating Lease, Expense	1,700		$ 3,000
Other Assets [Member]
Finance Lease, Right-of-Use Asset, after Accumulated Amortization, Total	500
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	300	د.إ 1.2
Decrease in Operating Lease Liability, Current	400
Decrease in Operating Lease Liability, Noncurrent	6,000
Decrease in Operating Lease Right-of-use Asset	5,500
Decrease in Operating Lease Expense	$ 1,100

X

- Definition

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

+ References

No definition available.

+ Details

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

X

- 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

X

- 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

X

- 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

X

- 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

X

- 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

X

- 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

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918701-209980

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977

+ Details

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

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977

+ Details

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

X

- 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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918673-209980

+ Details

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

X

- Definition

Amount of operating lease expense. Excludes sublease income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 4
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=123391704&loc=SL77918638-209977

+ Details

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

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977

+ Details

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

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977

+ Details

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

X

- Details

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Balance Type:
Period Type:

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- Details

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

X

- Details

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

X

- Details

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

X

- Details

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