Acquisitions - Schedule of Purchase Consideration (Parenthetical) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	1 Months Ended
	Jul. 31, 2019	Feb. 28, 2019
Business Acquisition [Line Items]
Business combination, shares included in purchase consideration	12.1
First milestone - restricted Series A-2 convertible preferred stock		$ 38.8
Minimum
Business Acquisition [Line Items]
Estimated discount rate		15.30%
Maximum
Business Acquisition [Line Items]
Estimated discount rate		17.60%
A-2 Convertible Preferred Stock
Business Acquisition [Line Items]
Business combination, shares included in purchase consideration		24.3
Stock issued, per share		$ 4.00