v3.25.4
Segment Information - Summary of Research and Development, General and Administrative Expenses, and Restructuring Charges are Significant Segment Expenses (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Segment Reporting Information [Line Items]    
Total research and development expense $ 43 $ 9,154
Total research and development expense 43 9,154
Total general and administrative expense 3,489 6,631
Restructuring charge 476 25,173
Facility and all other costs    
Segment Reporting Information [Line Items]    
Total research and development expense 0 3,116
Total general and administrative expense 225 854
Restructuring charge $ (80) $ 15,497
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration] Nonoperating Income (Expense) Nonoperating Income (Expense)
Compensation and benefits    
Segment Reporting Information [Line Items]    
Total research and development expense $ (7) $ 1,979
Total general and administrative expense 544 1,964
Restructuring charge 232 8,629
Consulting and professional services    
Segment Reporting Information [Line Items]    
Total general and administrative expense 2,720 3,813
Restructuring charge $ 341 $ 725
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration] Nonoperating Income (Expense) Nonoperating Income (Expense)
Clinical research and external costs    
Segment Reporting Information [Line Items]    
Total research and development expense $ 50 $ 4,059
Restructuring charge $ (17) $ 322