v3.25.4
Stock incentive plans, Equity awards (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Remaining Term [Abstract]    
Unrecognized compensation cost related to stock options $ 2,200  
Weighted average period to recognize compensation cost not yet recognized 1 year 10 months 24 days  
Fair value of all awards vested $ 1,300 $ 900
2005 Equity Incentive Plan and 2014 Equity Incentive Plan [Member] | Stock Options [Member]    
Number of Shares [Roll Forward]    
Outstanding, beginning of period (in shares) 1,377,113  
Granted (in shares) 0  
Exercised (in shares) 0 0
Forfeited (in shares) (37,375)  
Expired (in shares) (573,375)  
Outstanding, end of period (in shares) 766,363 1,377,113
Options vested or expected to vest (in shares) 766,363  
Options exercisable, end of period (in shares) 531,838  
Weighted Average Exercise Price [Abstract]    
Outstanding, beginning of period (in dollars per share) [1] $ 8.41  
Granted (in dollars per share) [1] 0  
Exercised (in dollars per share) [1] 0  
Forfeited (in dollars per share) [1] 6.67  
Expired (in dollars per share) [1] 9.04  
Outstanding, end of period (in dollars per share) [1] 8.03 $ 8.41
Options vested or expected to vest (in dollars per share) [1] 8.03  
Options exercisable, end of period (in dollars per share) [1] $ 8.52  
Aggregate Intrinsic Value [Abstract]    
Options vested and expected to vest $ 0  
Options exercisable, end of period $ 0  
Remaining Term [Abstract]    
Options vested and expected to vest [2] 5 years 8 months 12 days  
Options exercisable, end of period [2] 4 years 9 months 10 days  
2005 Equity Incentive Plan and 2014 Equity Incentive Plan [Member] | Restricted Share Units [Member]    
Number of Shares [Roll Forward]    
Options vested or expected to vest (in shares) 536,507  
Weighted Average Exercise Price [Abstract]    
Options vested or expected to vest (in dollars per share) [1] $ 0  
Number of Units [Roll Forward]    
Outstanding, beginning of period (in shares) 376,565  
Granted (in shares) 389,800  
Exercised (in shares) (129,858)  
Forfeited (in shares) (100,000)  
Expired (in shares) 0  
Outstanding, end of period (in shares) 536,507 376,565
Weighted Average Grant Stock Price [Abstract]    
Outstanding, beginning of period (in dollars per share) [3] $ 6.44  
Granted (in dollars per share) [3] 3.59  
Exercised (in dollars per share) [3] 5.98  
Forfeited (in dollars per share) [3] 6.54  
Expired (in dollars per share) [3] 0  
Outstanding, end of period (in dollars per share) [3] $ 4.47 $ 6.44
Aggregate Intrinsic Value [Abstract]    
Restricted stock units vested and expected to vest $ 2,146  
Remaining Term [Abstract]    
Restricted stock units vested and expected to vest [2] 1 year 8 months 12 days  
[1] weighted average exercise price per share
[2] weighted-average contractual remaining term in years
[3] weighted average grant stock price per share