Commitments and Contingencies - Purchase Commitments (Details) $ in Millions	9 Months Ended
Sep. 30, 2020 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Agreements for clinical and marketing services, termination notice period	90 days
Purchase Obligation, Fiscal Year Maturity [Abstract]
2020	$ 0.2
2021	1.0
2022	$ 0.5

Minimum amount of purchase arrangement maturing in the remainder of the fiscal year following the latest fiscal year ended. Includes, but is not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.

No definition available.

Name:	us-gaap_PurchaseObligationFutureMinimumPaymentsRemainderOfFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant