Collaboration and License Agreements - Remaining Transaction Price (Details) - Richter - USD ($) $ in Millions	Jun. 30, 2021	Mar. 30, 2020
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining transaction price		$ 50.0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining transaction price	$ 16.7
Recognition period for remaining transaction price	9 months