Subsequent Events - Additional Information (Detail) - USD ($)			12 Months Ended
	Feb. 23, 2021	Feb. 08, 2021	Dec. 31, 2018
Subsequent Event [Line Items]
Stock issued during period, value, issued for services			$ 59,788,076
Subsequent Event [Member] | Subordinate Voting Share [Member] | February Nine Two Thousand Twenty One [Member]
Subsequent Event [Line Items]
Stock issued during period, shares, new issues		3,122,073
Shares issued, price per share		$ 32.03
Stock issued during period, value, issued for services		$ 100,000,030
Subsequent Event [Member] | Subordinate Voting Share [Member] | February Twenty Three Two Thousand Twenty One [Member]
Subsequent Event [Line Items]
Stock issued during period, shares, new issues	1,571,917
Shares issued, price per share	$ 35.50
Stock issued during period, value, issued for services	$ 55,803,054