v3.26.1
Segment data - Schedule of Company's reportable segment net revenues and loss (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Revenue:    
Collaboration revenue $ 123,672 $ 75,622
External research and development expenses:    
Other development and discovery programs 25,198 14,432
Overhead and administrative expense 33,867 29,631
General and administrative expenses:    
Professional Services 5,740 5,091
Facility costs and other expense 7,665 7,927
Other income (expense):    
Interest and other income, net 14,485 10,982
Income tax benefit (provision) 1,097 (2,570)
Net loss (38,626) (72,700)
General and Administrative Expense [Member]    
General and administrative expenses:    
Personnel expense 22,975 22,153
Research and development    
General and administrative expenses:    
Personnel expense 46,241 39,796
MRT-2359 [Member]    
External research and development expenses:    
External research and development expense 8,959 12,332
MRT-6160 [Member]    
External research and development expenses:    
External research and development expense 7,539 15,209
MRT-8102 [Member]    
External research and development expenses:    
External research and development expense $ 19,696 $ 10,163