COST OF SALES - Narrative (Details) - CAD ($) $ in Thousands	12 Months Ended
Sep. 30, 2025	Sep. 30, 2024
Disclosure Of Cost Of Sales [Abstract]
Write-downs and provisions in relation to excess and obsolete inventories and biological assets	$ 4,218	$ 5,483

The amount of expense related to inventory and biological assets written down, provision and net realizable value

No definition available.

Name:	ogi_InventoriesAndBiologicalAssetsWriteDownProvisionAndAdjustmentsToNetRealizableValue
Namespace Prefix:	ogi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration