Subsequent Event - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
	Oct. 16, 2020	Sep. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Subsequent Event [Line Items]
Net proceeds from offering				$ 1,204	$ 2,073
Common Stock
Subsequent Event [Line Items]
Common stock issued		12,535,000
Common stock issued upon exercise of options			8,000
Subsequent Event | Common Stock | Underwritten Public Offering
Subsequent Event [Line Items]
Common stock issued	13,142,855
Shares issued price per share	$ 8.75
Common stock issued upon exercise of options	1,714,285
Net proceeds from offering	$ 107,700