v3.23.3
Stockholders' Equity - Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2023
Sep. 30, 2023
Dec. 31, 2022
Number of Options      
Outstanding balance at the beginning of the period (in shares)   5,195,538  
Granted (in shares) 0 66,910  
Exercised (in shares)   (17,166)  
Forfeited (in shares)   (169,427)  
Expired (in shares)   (331,390)  
Outstanding balance at the end of the period (in shares) 4,744,465 4,744,465 5,195,538
Exercisable at the end of the period (in shares) 3,511,374 3,511,374  
Weighted-Average Exercise Price per Share      
Outstanding balance at the beginning of the period (in dollars per share)   $ 25.28  
Granted (in dollars per share)   6.76  
Exercised (in dollars per share)   6.38  
Forfeited (in dollars per share)   10.80  
Expired (in dollars per share)   19.55  
Outstanding balance at the end of the period (in dollars per share) $ 26.01 26.01 $ 25.28
Exercisable at the end of the period (in dollars per share) $ 30.56 $ 30.56  
Weighted-Average Remaining Contractual Term (in years)      
Outstanding balance (in years)   4 years 9 months 5 years 10 months 17 days
Granted (in years)   8 years 6 months  
Exercised (in years)   7 months 24 days  
Weighted-average remaining contractual term of options exercisable at the end of the period (in years)   3 years 9 months 14 days  
Aggregate Intrinsic Value (in thousands)      
Outstanding balance at the end of the period $ 0 $ 0 $ 78
Exercisable at the end of the period $ 0 $ 0