Share Capital - Schedule of Common Stock Outstanding Roll Forward (Detail) - USD ($)			3 Months Ended	9 Months Ended
	May 15, 2020	Dec. 31, 2019	Sep. 30, 2020	Sep. 30, 2020	Sep. 30, 2019
Class of Stock [Line Items]
Distribution of contingent consideration				2,713,463
Distribution of deferred shares	101,695	1,367,643
Issuance of shares for redemption of noncontrolling interests			$ 5,350,000	$ 5,350,000	$ 25,068,847
Issuance of shares upon exercise of options and warrants			$ 448,424	$ 656,096
Subordinate Voting Shares [member]
Class of Stock [Line Items]
Beginning balance				128,999,964
Issuance of shares under business combinations and investments				238,450
Distribution of contingent consideration				2,713,463
Distribution of deferred shares				1,220,548
Issuance of shares for redemption of noncontrolling interests				$ 1,315,789
Issuance of shares upon exercise of options and warrants				$ 71,384
Issuances of shares upon vesting of RSUs				901,023
Exchange of shares				27,539,300
Ending balance		128,999,964	162,999,921	162,999,921
Multiple Voting Shares [member]
Class of Stock [Line Items]
Beginning balance				373,350
Exchange of shares				(252,440)
Ending balance		373,350	120,910	120,910
Super Voting Shares [member]
Class of Stock [Line Items]
Beginning balance				402,289
Exchange of shares				(22,953)
Ending balance		402,289	379,336	379,336