XML 231 R59.htm IDEA: XBRL DOCUMENT v3.26.1

Income taxes - Changes in valuation allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Increase (Decrease) In valuation Allowance [Roll Forward]
Valuation allowance on deferred tax assets, beginning of year	$ (83,570)	$ (78,875)
Change related to:
Valuation allowance movement recognized in equity	(4,544)	(370)
Valuation allowance on deferred tax assets, end of year	(115,067)	(83,570)
United States
Change related to:
Valuation allowance movement recognized in continuing operations	(22,472)	(2,272)
Idaho
Change related to:
Valuation allowance movement recognized in continuing operations	(4,480)	(487)
Canada
Change related to:
Valuation allowance movement recognized in continuing operations	$ (1)	$ (1,566)

X

- Definition

A roll forward is a valuation allowance of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

Name:	ppta_IncreaseDecreaseInValuationAllowanceRollForward
Namespace Prefix:	ppta_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of deferred tax assets valuation allowance continuing operations for which that a tax benefit realized.

+ References

No definition available.

+ Details

Name:	ppta_ValuationAllowanceMovementRecognizedInContinuingOperations
Namespace Prefix:	ppta_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of valuation allowance movement recognized in equity statement during the period.

+ References

No definition available.

+ Details

Name:	ppta_ValuationAllowanceMovementRecognizedInEquity
Namespace Prefix:	ppta_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Abstract of valuation allowance related change.

+ References

No definition available.

+ Details

Name:	ppta_ValuationAllowanceRelatedChange
Namespace Prefix:	ppta_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-2

+ Details

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

X

- Details

Name:	us-gaap_IncomeTaxAuthorityAxis=country_US
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IncomeTaxAuthorityAxis=stpr_ID
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IncomeTaxAuthorityAxis=country_CA
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: