Organization and Nature of the Business - Additional Information (Details) $ / shares in Units, $ in Thousands			1 Months Ended	12 Months Ended
	Sep. 15, 2020	Sep. 15, 2020	Feb. 28, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) shares	Dec. 31, 2019 USD ($) shares
Schedule Of Equity Method Investments [Line Items]
Entity incorporation date				Nov. 30, 2014
Entity date of merger				Apr. 28, 2020
Equity method investment, Ownership percentage				25.00%
Reverse stock split	1-for-7	1-for-7
Exchange ratio	0.1240
Common stock, shares outstanding | shares				19,677,249	2,155,578
Accumulated deficit				$ 106,325	$ 69,647
Adicet Therapeutics [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method investment, Ownership percentage				75.00%
Common stock, shares outstanding | shares				19,589,828
Cash, cash equivalents and marketable securities				$ 94,600
Accumulated deficit				$ 106,500
Initial Public Offering | Subsequent Event
Schedule Of Equity Method Investments [Line Items]
Number of common stock shares sold | shares			10,575,513
Issuance price per shares | $ / shares			$ 13.00
Underwriting discounts and commissions and other offering expenses			$ 137,500
Net proceeds received from offering			$ 15,000
Initial Public Offering | Maximum | Subsequent Event
Schedule Of Equity Method Investments [Line Items]
Option to purchase of common stock at public offering price | shares			1,344,743