Income Taxes - Schedule of Loss Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Pre-tax book loss	$ (48,990)	$ (53,295)
Tax at federal statutory rate	(10,288)	(11,192)
State taxes	879	766
Stock based compensation	3	1,060
Foreign rate differential	(1,223)	(871)
Unrecognized tax benefit	549
Other adjustments	1,453	(1,707)
Valuation allowance	9,563	12,663
Total income tax provision	$ 936	$ 719