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Stock-based compensation (Tables)
 6 Months Ended
Jun. 30, 2025
Share-Based Payment Arrangement [Abstract]  
Schedule of stock-based compensation expense
Stock-based compensation expense for the three and six months ended June 30, 2025 and 2024 was classified in the Company’s condensed consolidated statement of operations and comprehensive loss as follows (in thousands):
 Three Months Ended June 30,Six Months Ended June 30,
 2025202420252024
Stock-based compensation expense:  
General and administrative$2,535 $3,916 $5,454 $7,894 
Research and development2,457 2,465 5,045 4,702 
Total stock-based compensation expense$4,992 $6,381 $10,499 $12,596