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INVESTMENT IN ASSOCIATE (Details 1) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Investment In Associate
Balance	$ 1,735	$ 1,225
Additional investment		1,000
Share of (loss) income	(44)	440
Balance	$ 1,691	$ 2,665

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- Definition

The amount of investments in subsidiaries, joint ventures and associates in an entity's separate financial statements. [Refer: Associates [member]; Joint ventures [member]; Subsidiaries [member]; Investments in subsidiaries]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2020-01-01
-Paragraph 10
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2020-en-r&anchor=para_10&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_InvestmentsInSubsidiariesJointVenturesAndAssociates
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of additional investments.

+ References

No definition available.

+ Details

Name:	ptgef_AdditionalInvestments
Namespace Prefix:	ptgef_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	ptgef_DisclosureInvestmentInAssociateAbstract
Namespace Prefix:	ptgef_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	ptgef_UnrecognisedShareOfGainLossesOfAssociates
Namespace Prefix:	ptgef_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration