Acquisition of Bellwether Bio - Intangible Assets Acquired (Details) - Bellweather Bio, Inc. $ in Thousands	1 Months Ended
	Apr. 30, 2019 USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Identified intangible assets	$ 9,200
Acquired license
Acquired Finite-Lived Intangible Assets [Line Items]
Identified intangible assets	$ 5,100
Estimated useful life	10 years
Covenants not to compete
Acquired Finite-Lived Intangible Assets [Line Items]
Identified intangible assets	$ 2,500
Estimated useful life	6 years
IPR&D
Acquired Finite-Lived Intangible Assets [Line Items]
Identified intangible assets	$ 1,600