Income Taxes - Summary of Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Current:
Federal	$ (49)	$ 0
State	35	35
Foreign	1,148	766
Total current	1,134	801
Deferred:
Federal	12	12
State	0	0
Foreign	(610)	2
Total deferred	(598)	14
Provision for income taxes	$ 536	$ 815