Reduction in Workforce - Additional Information (Details) $ in Millions	1 Months Ended	3 Months Ended	6 Months Ended	12 Months Ended
Jan. 31, 2020 Employee	Jun. 30, 2020 USD ($)	Jun. 30, 2020 USD ($) Employee	Dec. 31, 2019 Employee
Restructuring Charges [Abstract]
Reduction in workforce \| Employee	2		0	8
Additional restructuring charges \| $		$ 0.0	$ 0.1
Reduction in workforce, percentage				22.00%

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Data Type:	xbrli:monetaryItemType
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Period Type:	duration