Commitments and Contingencies - Narrative (Details) $ in Millions	1 Months Ended	12 Months Ended
	Nov. 30, 2016 USD ($) ft² consecutive_extension_period	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Loss Contingencies [Line Items]
Lease space occupied (in square feet) | ft²	51,000
Number of consecutive extension periods | consecutive_extension_period	1
Renewal term	5 years
Renewal notice period	12 months
Security deposit, in form of letter of credit	$ 1.3
Tenant improvement allowance	$ 0.5
Discount rate		8.00%
Operating lease expense		$ 4.2
Remaining lease term		5 years 3 months
Rent expense			$ 4.0
Costs incurred, third party agreements		$ 1.0
Minimum
Loss Contingencies [Line Items]
Cancellation notice period, technology agreements		30 days
Potential costs, third party agreements		$ 12.5
Maximum
Loss Contingencies [Line Items]
Cancellation notice period, technology agreements		90 days
Potential costs, third party agreements		$ 12.9
License And Collaboration Agreements | Maximum
Loss Contingencies [Line Items]
Potential costs, technology agreements		11.7
Costs incurred, technology agreements		$ 0.5