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Stock-Based Compensation (Tables)
 9 Months Ended
Sep. 30, 2025
Share-Based Payment Arrangement [Abstract]  
Schedule of non-cash stock-based compensation expense
Non-cash stock-based compensation expense (service-based stock options, restricted stock units and the employee stock purchase plan) is summarized in the following table:
 Three Months Ended September 30,Nine Months Ended September 30,
(in thousands)2025202420252024
Cost of product sales$1,029 $762 $3,279 $2,914 
Research and development1,015 1,095 3,650 3,281 
Selling, general and administrative6,655 7,367 23,415 22,383 
Total non-cash stock-based compensation expense$8,699 $9,224 $30,344 $28,578