Share Capital - Schedule of Stock-Based Compensation Expense (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-Based Compensation Expense	$ 4,435,634	$ 3,564,095	$ 15,209,520	$ 13,324,083
Stock options expense
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-Based Compensation Expense	2,614,273	1,666,465	8,209,557	4,248,461
Restricted Stock Units
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-Based Compensation Expense	$ 1,821,054	$ 1,897,630	$ 6,999,963	$ 9,075,622