Liabilities - Schedule of Other Long-term Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Payables and Accruals [Abstract]
Liability for contingent consideration (note 12)	$ 978	$ 978
Finance lease liability (note 11)	77	46
Total	$ 1,055	$ 1,024