Revenue Recognition - Summary of Revenues Disaggregated by Geography (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Disaggregation Of Revenue [Line Items]
Total revenue		$ 108,576	$ 148,984
UNITED STATES
Disaggregation Of Revenue [Line Items]
Total revenue		65,000	88,444
Other
Disaggregation Of Revenue [Line Items]
Total revenue	[1]	$ 43,576	$ 60,540

[1] No single country represented 10% of the Company’s revenues in the periods presented.