Stock-based Compensation - Additional Information (Details) - USD ($) shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Percentage of employees can satisfied the service condition			33.33%
Minimum period of employees need to continued employment			3 years
Number of common stock available for issuance	10.5		10.5
Shares issued	0.5		0.5
Shares granted	0.1		0.3
Stock-based compensation expense	$ 2,000,000	$ 0	$ 3,000,000	$ 0