OPERATIONS OF TRAUMA HEALING CENTERS (Narrative) (Details) $ / shares in Units, $ in Thousands	2 Months Ended
Oct. 16, 2018 CAD ($) $ / shares
Trauma Healing Centers [Member]
Operations Of Trauma Healing Centers [Line Items]
Proportion of ownership interest in subsidiary sold	100.00%
Fair value of consideration received	$ 1,141
Equity instruments held	$ 864,678
Vivo Cannabis Inc [Member]
Operations Of Trauma Healing Centers [Line Items]
Equity instruments held, share price \| $ / shares	$ 1.32

The amount of consideration paid or received in respect of both obtaining and losing control of subsidiaries or other businesses. [Refer: Subsidiaries [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 7
-IssueDate 2019-01-01
-Paragraph 40
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2019-en-r&anchor=para_40_a&doctype=Standard
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_ConsiderationPaidReceived
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of instruments held by the entity that provide evidence of a residual interest in the assets of another entity after deducting all of its liabilities.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_55&doctype=Standard
-URIDate 2019-03-27

+ Details

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

- Definition

Represents per share price of equity instrument.

+ References

No definition available.

+ Details

Name:	ogi_EquityInstrumentsHeldSharePrice
Namespace Prefix:	ogi_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Operations Of Trauma Healing Centers [Line Items]

+ References

No definition available.

+ Details

Name:	ogi_OperationsOfTraumaHealingCentersLineItems
Namespace Prefix:	ogi_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents proportion of ownership interest in subsidiary sold.

+ References

No definition available.

+ Details

Name:	ogi_ProportionOfOwnershipInterestInSubsidiarySold
Namespace Prefix:	ogi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	ifrs-full_ContinuingAndDiscontinuedOperationsAxis=ogi_TraumaHealingCentersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ContinuingAndDiscontinuedOperationsAxis=ogi_VivoCannabisIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: