Quarterly report pursuant to Section 13 or 15(d)

Sponsored Research and Clinical Trial Agreements - Additional Information (Details)

v3.20.1
Sponsored Research and Clinical Trial Agreements - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Cost of the SRA $ 300 $ 300
Research and Development Expense (Excluding Acquired in Process Cost) 14,867 23,273
Cellvation [Member]    
Research and Development Expense (Excluding Acquired in Process Cost) $ 0 $ 100