Employee Benefit Plan - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Compensation And Retirement Disclosure [Abstract]
Defined contribution plan name	401(k) benefit plan
Matches employee compensation for participating employees	3.00%
Fully vested in employer contributions	5 years
Defined contribution this plan	$ 0.7	$ 0.7	$ 0.6