v3.26.1
Stock-Based Compensation - Stock options (Details) - USD ($)
 6 Months Ended 12 Months Ended
May 03, 2019
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Number of Shares            
Outstanding at the beginning (in shares)   848,966        
Granted (in shares)   174,500        
Exercised (in shares)   (2,488)        
Forfeitures (in shares)   (5,960)        
Outstanding at the end (in shares)   1,015,018   848,966    
Exercisable at the end (in shares)   709,995        
Weighted Average Exercise Price            
Outstanding at the beginning (in dollars per share)   $ 73.76        
Granted (in dollars per share)   9.92        
Exercised (in dollars per share)   5.76        
Forfeited (in dollars per share)   21.9        
Outstanding at the end (in dollars per share)   63.26   $ 73.76    
Exercisable at the end (in dollars per share)   $ 85.67        
Weighted Average Remaining Contractual Life (Years) And Aggregate Intrinsic Value            
Outstanding (in years)   6 years 7 months 6 days   6 years 6 months    
Exercisable at the end (in years)   5 years 7 months 6 days        
Weighted average grant date fair value per share of stock options granted   $ 7.61        
Aggregate grant date fair value   $ 800,000 $ 3,700,000      
Share Based Compensation Expense Not Recognized            
Unrecognized compensation cost   $ 2,300,000   $ 1,600,000    
Compensation expense recognition period   2 years 8 months 12 days   2 years 1 month 6 days    
2015 Plan            
Number of Shares            
Outstanding at the beginning (in shares)   848,966 737,895 737,895 567,995  
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)   $ 73.76 $ 83.84 $ 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 $ 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  
A&R 2019 Omnibus Incentive Plan            
Stock Based Compensation            
Total number of shares of common stock that may be issued   241,666        
Annual increase in number of share reserved for issuance (as percent) 4.00%          
Number of shares reserved for issuance under the plan   139,500        
Vesting period   4 years        
Expiration period   10 years        
Maximum annual increase in shares available for issuance under the plan   80,000        
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 80,461   85,002    
Number of shares issued   32,020   27,479    
Maximum annual increase in shares available for issuance under the plan 40,000