Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Income tax provision	$ 390	$ 62	$ 964	$ 391
Effective tax rate	(3.30%)	(0.60%)	(2.60%)	(1.10%)