Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Stock Option Activity (Details)

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Stock-Based Compensation - Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2024
Dec. 31, 2023
2018 Equity Incentive Plan    
Number of Shares    
Beginning balance (in shares) 2,500  
Granted (in shares) 0  
Exercised (in shares) 0  
Forfeited (in shares) 0  
Ending balance (in shares) 2,500 2,500
Options exercisable (in shares) 2,500  
Weighted Average Exercise Price    
Beginning balance (in dollars per share) $ 56.89  
Granted (in dollars per share) 0  
Exercised (in dollars per share) 0  
Forfeited (in dollars per share) 0  
Ending balance (in dollars per share) 56.89 $ 56.89
Options exercisable (in dollars per share) $ 56.89  
Weighted Average Remaining Contractual Term (years)    
Outstanding 3 years 10 months 24 days 4 years 2 months 12 days
Exercisable 3 years 10 months 24 days  
Aggregate Intrinsic Value    
Outstanding $ 0 $ 0
Exercisable $ 0  
2019 Stock Option and Incentive Plan    
Number of Shares    
Beginning balance (in shares) 14,625  
Granted (in shares) 0  
Exercised (in shares) 0  
Forfeited (in shares) (4,114)  
Ending balance (in shares) 10,511 14,625
Options exercisable (in shares) 10,511  
Weighted Average Exercise Price    
Beginning balance (in dollars per share) $ 39.67  
Granted (in dollars per share) 0  
Exercised (in dollars per share) 0  
Forfeited (in dollars per share) 44.54  
Ending balance (in dollars per share) 37.77 $ 39.67
Options exercisable (in dollars per share) $ 37.77  
Weighted Average Remaining Contractual Term (years)    
Outstanding 3 years 9 months 18 days 2 years 10 months 24 days
Exercisable 3 years 9 months 18 days  
Aggregate Intrinsic Value    
Outstanding $ 0 $ 0
Exercisable $ 0