v3.25.4
Stock-Based Compensation - Stock options (Details) - USD ($)
 12 Months Ended
May 03, 2019
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Share Based Compensation Expense Not Recognized        
Unrecognized compensation cost   $ 1,600,000    
Compensation expense recognition period   2 years 1 month 6 days    
2015 Plan        
Number of Shares        
Outstanding at the beginning (in shares)   737,895 567,995  
Granted (in shares)   120,748 248,609  
Exercised (in shares)     (1,214)  
Forfeitures (in shares)   (9,677) (77,495)  
Outstanding at the end (in shares)   848,966 737,895 567,995
Exercisable at the end (in shares)   636,486    
Weighted Average Exercise Price        
Outstanding at the beginning (in dollars per share)   $ 83.84 $ 105.96  
Granted (in dollars per share)   9.33 19.8  
Exercised (in dollars per share)     18.6  
Forfeited (in dollars per share)   37.74 41.76  
Outstanding at the end (in dollars per share)   73.76 $ 83.84 $ 105.96
Exercisable at the end (in dollars per share)   $ 94.11    
Weighted Average Remaining Contractual Life (Years) And Aggregate Intrinsic Value        
Outstanding (in years)   6 years 6 months 7 years 1 month 6 days 7 years 3 months 18 days
Exercisable at the end (in years)   5 years 9 months 18 days    
Outstanding at the beginning (in dollars)   $ 22,000 $ 52,000  
Outstanding at the end (in dollars)     $ 22,000 $ 52,000
Exercisable at the end (in dollars)   $ 55,000    
Weighted average grant date fair value per share of stock options granted   $ 7.17 $ 14.28  
Aggregate intrinsic value of stock options exercised   $ 0 $ 9,000  
Aggregate grant date fair value   $ 4,500,000 $ 5,100,000  
Omnibus Incentive Plan        
Stock Based Compensation        
Annual increase in number of share reserved for issuance (as percent) 4.00%      
Number of shares reserved for issuance under the plan 241,666      
2015 Plan and 2019 Employee Stock Purchase Plan        
Stock Based Compensation        
Number of shares reserved for issuance under the plan   87,815    
Vesting period   4 years    
Expiration period   10 years    
2019 Employee Stock Purchase Plan        
Stock Based Compensation        
Annual increase in number of share reserved for issuance (as percent) 1.00%      
Number of shares reserved for issuance under the plan 20,000 85,002    
Number of shares issued   27,479    
Maximum annual increase in shares available for issuance under the plan 40,000