Share Capital - Summary of Warrants (Details) - CAD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Warrants And Rights Note Disclosure [Abstract]
Number of whole warrants, Beginning balance	128,193,047	127,073,136
Number of whole warrants, Supreme Cannabis Warrants		1,265,742
Number of whole warrants, Expiry of warrants		(145,831)
Number of whole warrants, Ending balance	128,193,047	128,193,047
Average exercise price, Beginning balance	$ 58.04	$ 58.33
Average exercise price, Supreme Cannabis warrants		25.61
Average exercise price, Expiry of warrants		$ 32.61
Average exercise price, Ending balance	$ 58.04	$ 58.04
Warrant value, Beginning balance	$ 2,581,788	$ 2,568,438
Warrant Value, Supreme Cannabis warrants		13,350
Warrant value, Expiry of warrants
Warrant value, Ending balance	$ 2,581,788	$ 2,581,788