Commitments and Contingencies (Details) $ in Millions					3 Months Ended	6 Months Ended
	Apr. 29, 2019 USD ($)	Mar. 31, 2019	Apr. 04, 2018 USD ($)	Jun. 09, 2016 case	Mar. 31, 2020 USD ($)	Jun. 30, 2020 USD ($) issuer
Loss Contingencies [Line Items]
Class action cases (in cases) | case				2
Number of days to file a complaint		30 days
Number of issuers arbitration initiated with (issuers) | issuer						2
Right of termination prior written notice period			30 days
Payment for contingent consideration liability			$ 0.3
Everest Medicines II Limited
Loss Contingencies [Line Items]
Milestone payment, achievement of FDA approval	$ 60.0					$ 0.5
The Scripps Research Institute
Loss Contingencies [Line Items]
License agreement milestone expense					$ 0.5
Insurance Coverage Arbitration
Loss Contingencies [Line Items]
Damages sought						$ 3.4