Quarterly report pursuant to Section 13 or 15(d)

Note 10 - Stock-based Compensation - Share-based Payment Expense (Details)

v3.20.2
Note 10 - Stock-based Compensation - Share-based Payment Expense (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Share-based payment expense $ 4,905 $ 504 $ 17,007 $ 1,734
Research and Development Expense [Member]        
Share-based payment expense 1,051 34 2,784 309
General and Administrative Expense [Member]        
Share-based payment expense $ 3,854 $ 470 $ 14,223 $ 1,425