Annual report pursuant to Section 13 and 15(d)

License Agreement - Narrative (Details)

v3.20.1
License Agreement - Narrative (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Contingencies And Commitments [Line Items]    
Accrued accounts payable $ 62 $ 2,523
TUM License    
Contingencies And Commitments [Line Items]    
Accrued accounts payable $ 2,300