Annual report [Section 13 and 15(d), not S-K Item 405]

Business combinations - Gain on bargain purchase (Details)

v3.25.1
Business combinations - Gain on bargain purchase (Details)
12 Months Ended
Jun. 01, 2023
USD ($)
Dec. 31, 2023
USD ($)
Mar. 06, 2024
$ / shares
May 31, 2023
$ / shares
Business Acquisition [Line Items]        
Gain on bargain purchase   $ 22,049,000    
TCR2 Therapeutics        
Business Acquisition [Line Items]        
Purchase consideration $ (61,726,000)      
Net assets acquired and liabilities assumed 83,775,000      
Gain on bargain purchase $ 22,049,000 22,000,000    
Ratio for issuance of Company's ADSs for each TCR2 stock acquired     1.5117  
Closing price of Company's ADS | $ / shares     $ 1.32 $ 1.02
Amount of TCR2's earnings included in the Company's Consolidated Statement of Operations   $ (32,427,000)