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Business Combination - Additional Information (Details) $ in Thousands				3 Months Ended	6 Months Ended
	Jul. 27, 2021	Sep. 15, 2020 shares	Sep. 15, 2020 shares	Jun. 30, 2021 USD ($)	Jun. 30, 2021 USD ($) ValueRight	Dec. 31, 2020 USD ($)
Business Acquisition [Line Items]
Impairment charges				$ 700	$ 1,200
Percentage of outstanding capital stock		75.00%	75.00%
Reverse stock split		1-for-7	1-for-7
Goodwill				19,462	$ 19,462	$ 20,089
Expiration period termination notice	60 days
resTORbio
Business Acquisition [Line Items]
Contractual Contingent Value Right | ValueRight					1
Reverse stock split exchange ratio		0.1240
Number of shares of surviving stock options | shares		81,370
Unvested restricted stock units outstanding | shares		91,309	91,309
Number of common stock shares sold | shares		54,553
Measurement prior adjustment in tangible and intangible assets					$ 600
Goodwill				$ 19,462	$ 19,462
resTORbio | Common Stock
Business Acquisition [Line Items]
Percentage of outstanding capital stock		25.00%	25.00%

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