Revenue Recognition - Additional Information (Details1) - GSK Collaboration Agreement - USD ($) $ in Millions	Sep. 30, 2020	Jul. 27, 2020
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [ Line Items]
Transaction price	$ 96.6	$ 108.5
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-09-30
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [ Line Items]
Transaction price	$ 48.7
Revenue, remaining performance obligation, expected timing of satisfaction, period	12 months