Annual report pursuant to Section 13 and 15(d)

Income Taxes - Schedule of Domestic and Foreign Components of Net Loss (Details)

v3.20.1
Income Taxes - Schedule of Domestic and Foreign Components of Net Loss (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Operating Loss Carryforwards [Line Items]                      
Net loss $ (9,579) $ (9,148) $ (8,718) $ (7,642) $ (5,782) $ (5,663) $ (6,775) $ (4,947) $ (35,087) $ (23,167) $ (8,517)
Domestic                      
Operating Loss Carryforwards [Line Items]                      
Net loss                 (34,181) (23,047) (7,551)
Foreign                      
Operating Loss Carryforwards [Line Items]                      
Net loss                 $ (906) $ (120) $ (966)