v3.26.1
Segment Information - Summary of Additional Information On Company's Net loss Including Segment Expenses (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
General and administrative expense      
Other income and expense, net $ 2,137 $ 1,149  
Net loss (20,196) (32,656) $ (100,000)
Operating Segments      
Research and development expense      
LX2006 6,671 3,810  
LX2020 1,694 4,729  
Other programs 668 766  
Employee compensation expenses 3,714 4,371  
Lab-related costs and supplies 463 332  
All other research and development expense 2,493 3,163  
General and administrative expense      
Employee compensation expenses 1,921 4,069  
All other general and administrative expense 4,709 12,565  
Other income and expense, net (2,137) (1,149)  
Net loss $ (20,196) $ (32,656)