Share Capital - Schedule of Stock-Based Compensation Expense (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-Based Compensation Expense	$ 19,336,718	$ 18,285,377	$ 6,625,071
Stock options expense
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-Based Compensation Expense	10,937,768	6,393,277	1,876,627
RSU Expense
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-Based Compensation Expense	$ 8,398,950	$ 11,892,100	$ 4,748,444