Share Capital - Additional Information (Detail) $ in Thousands			1 Months Ended	6 Months Ended
	Mar. 01, 2022 USD ($) ConsecutiveDay shares	Feb. 25, 2022 USD ($) shares	Jun. 30, 2018	Jun. 30, 2022 USD ($) Dispensary shares	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($) shares
Reduction in contingent liability | $				$ (31,978)	$ 413
Current liabilities | $				131,973		$ 204,379
Dharma Pharmaceuticals LLC [Member]
Business combination, contigent liability | $				40,074		48,665
Current liabilities | $				$ 10,947		$ 20,884
Dharma Pharmaceuticals LLC [Member] | Maximum [Member]
Retail dispensary | Dispensary				5
Illinois Disp LLC [member]
Issuance of shares under business combinations and investments	204,036
Issuance of shares under business combinations and investments, value | $	$ 3,785
Business combination, contigent liability | $	$ 6,766
Restricted Stock Units (RSUs) [Member]
Cost Not yet Recognized, Amount | $				$ 37,405
Cost Not yet Recognized, Period for Recognition				2 years 3 months 25 days
Multiple Voting Shares [Member]
Conversion Of Stock, Shares Converted				5,000
Common Stock, Shares, Outstanding				38,531		38,531
Multiple Voting Shares [Member] | Conversion Of Multiple Voting Shares [member]
Conversion Of Stock, Shares Converted				5,000
Conversion of Stock, Shares Issued				5,000
Voting Rights				100
Multiple Voting Shares [Member] | Conversion Of Super Voting Shares [member]
Conversion of Stock, Shares Issued				5,000
Subordinate Voting Shares [Member]
Common Stock, Shares, Outstanding				203,733,065		201,768,312
Issuance of shares under business combinations and investments, value | $		$ 13,111
Subordinate Voting Shares [Member] | Dharma Pharmaceuticals LLC [Member]
Issuance of shares under business combinations and investments		667,080
Subordinate Voting Shares [Member] | Dharma Pharmaceuticals LLC [Member] | Maximum [Member]
Contingent consideration | $				$ 65,000
Subordinate Voting Shares [Member] | Illinois Disp LLC [member]
Issuance of shares under business combinations and investments	204,036
Issuance of shares under business combinations and investments, value | $	$ 3,785
Consecutive days | ConsecutiveDay	20
Subordinate Voting Shares [Member] | GTII Stock and Incentive Plan [Member]
Percentage of maximum number of shares issued under the plan			10.00%
Subordinate Voting Shares [Member] | Conversion Of Multiple Voting Shares [member]
Conversion of Stock, Shares Issued				500,000
Shares Available For Conversion				3,853,100
Super Voting Shares [Member]
Conversion Of Stock, Shares Converted				5,000
Common Stock, Shares, Outstanding				280,031		285,031
Super Voting Shares [Member] | Conversion Of Super Voting Shares [member]
Conversion Of Stock, Shares Converted				5,000
Voting Rights				1,000
Shares Available For Conversion				28,003,100