v3.26.1
Segment Reporting - Schedule of Segment Profit or Loss, Including Segment Expenses (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Segment Reporting [Line Items]            
Collaboration revenue $ 2,082   $ 1,907   $ 3,381 $ 3,536
Type of Revenue [Extensible List] us-gaap:LicenseMember   us-gaap:LicenseMember   us-gaap:LicenseMember us-gaap:LicenseMember
Less:            
Total operating expenses $ 33,216   $ 38,875   $ 67,515 $ 81,784
Loss from operations (31,134)   (36,968)   (64,134) (78,248)
Other income (expense):            
Interest income 1,555   2,921   3,422 6,257
Change in fair value of stock price appreciation milestones (580)   (73)   (660) 207
Other income 0   (50)   0 (93)
Total other income 975   2,898   2,762 6,557
Net loss (30,159) $ (31,213) (34,070) $ (37,621) (61,372) (71,691)
Segment Reporting [Member]            
Segment Reporting [Line Items]            
Collaboration revenue 2,082   1,907   3,381 3,536
Less:            
Personnel costs 10,656   10,682   21,845 22,386
Clinical programs 7,432   5,778   13,598 12,061
Research activities 991   1,870   2,792 4,306
Facilities costs 4,239   5,884   8,642 11,964
Other segment expenses [1] 9,898   14,661   20,638 31,067
Total operating expenses 33,216   38,875   67,515 81,784
Loss from operations (31,134)   (36,968)   (64,134) (78,248)
Other income (expense):            
Interest income 1,555   2,921   3,422 6,257
Change in fair value of stock price appreciation milestones 580   73   660 (207)
Other income 0   (50)   0 (93)
Total other income 975   2,898   2,762 6,557
Net loss $ (30,159)   $ (34,070)   $ (61,372) $ (71,691)
[1] Other segment expenses include stock compensation expense, depreciation, legal fees, general and administrative expenses, and corporate expenses.