Income Taxes - Summary of Income Tax Expense (Benefit) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Current:
Federal	$ (132)	$ (265)
State	7	2
Foreign	108	63
Total current	(17)	(200)
Deferred:
Federal	144	265
Foreign	(47)	(52)
Total deferred	97	213
Total income tax expense (benefit)	$ 80	$ 13