Financial Instruments - Summary of Reconciliation of Level 3 Fair Values (Detail)	12 Months Ended
	Dec. 31, 2019 USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Payment of earn-out obligation	$ (4,795,822)
Fair Value, Inputs, Level 3 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance as at January 1, 2019	2,920,583
Payment of earn-out obligation	(4,795,822)
Accretion expense	77,095
Fair value adjustment	2,861,204
Balance as at December 31, 2019	$ 1,063,060