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Equity-based Compensation - Activity for options (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Number of Options      
Beginning Balance (in shares) 4,213,405    
Options granted (in shares) 205,000 412,720  
Options exercised (in shares) 0 0  
Options forfeited (in shares) (3,050)    
Options expired (in shares) (1,250)    
Ending Balance (in shares) 4,414,105   4,213,405
Exercisable (in shares) 3,322,003    
Weighted Average Exercise Price      
Beginning Balance (in dollars per share) $ 4.73    
Options granted (in dollars per share) 1.98    
Options forfeited (in dollars per share) 2.49    
Options expired (in dollars per share) 2.66    
Ending Balance (in dollars per share) 4.61   $ 4.73
Exercisable (in dollars per share) $ 4.96    
Aggregate Intrinsic Value      
Aggregate Intrinsic Value $ 1,515   $ 1,579
Aggregate Intrinsic Value - Exercisable $ 1,422    
Weighted Average Remaining Contractual Life 6 years 4 months 24 days   6 years 6 months
Weighted Average Remaining Contractual Life -Exercisable 5 years 8 months 12 days