Income Tax - Reconciliation of Income Tax Attributable to Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Income tax recovery at statutory rates (at a rate of 21% for all years presented)	$ (8,894)	$ (6,962)	$ (3,094)
Expenses not deducted for tax purposes	299	224	118
Effect of tax rate changes on deferred tax assets and liabilities	(18)	17	34
Rate differential on foreign earnings	(26)	(77)	(103)
Research and development tax credits	(1,154)	(134)	(23)
Change in valuation allowance	10,464	7,544	3,662
Reassessment of previously recognized net operating losses	9	(620)
Adjustment to prior year research and development tax credits	(731)
Other	$ 51	$ 8	$ (594)