Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets - Summary of Balance of Intangible Assets (Details)

v3.19.3
Intangible Assets - Summary of Balance of Intangible Assets (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]    
Cost, Total $ 26,400 $ 26,400
In-Process Research and Development    
Finite-Lived Intangible Assets [Line Items]    
Intangible Assets, Indefinite-lived $ 26,400