Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Definite-lived intangible assets
Gross Cost	$ 751	$ 751
Accumulated Amortization	200	181
Intangible assets, net
Gross cost	7,380	7,380
IPR&D
Definite-lived intangible assets
Gross Cost	$ 6,629	6,629
Other intangible assets
Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Remaining life	7 years 3 months 18 days
Definite-lived intangible assets
Gross Cost	$ 751	751
Accumulated Amortization	$ 200	$ 181