The Company and Basis of Presentation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended	9 Months Ended
	Oct. 16, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Company And Basis Of Presentation [Line Items]
Net proceeds from offering			$ 1,204	$ 2,073
Working capital			38,500
Cash			$ 15,678		$ 47,113
Common Stock
Company And Basis Of Presentation [Line Items]
Common stock issued		12,535,000
Underwritten Public Offering | Common Stock | Subsequent Event
Company And Basis Of Presentation [Line Items]
Common stock issued	13,142,855
Shares issued price per share	$ 8.75
Net proceeds from offering	$ 107,700