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Income Taxes - Schedule of Activity in Valuation Allowance Associated with Deferred taxes (Parenthetical) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)
Rodin Therapeutics, Inc.
Income Taxes [Line Items]
Valuation allowance increased due to acquisition	$ 3.0

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of increase in valuation and qualifying accounts and reserves from business combination.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09)
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

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