Annual report pursuant to Section 13 and 15(d)

License and Transfer Agreement - Narrative (Details)

v3.19.1
License and Transfer Agreement - Narrative (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Contingencies And Commitments [Line Items]    
Accrued license obligations $ 2,523 $ 806
TUM License    
Contingencies And Commitments [Line Items]    
Accrued license obligations $ 2,300