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Stockholders' Equity - Options Outstanding Separated Into Range of Exercise Price (Details) - $ / shares
3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted average exercise price (in dollars per share) $ 7.077  
Options outstanding, exercise price range (in shares) 800,662  
Options outstanding, weighted average remaining contractual life (Year) 2 years 6 months 2 years 9 months
Options exercisable, exercise price range (in shares) 786,922  
Options exercisable, weighted average remaining contractual life (years) 2 years 4 months 28 days  
Weighted average exercise price of options exercisable, exercise price range (in dollars per share) $ 7.101  
Range One    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Lower range of exercise price (in dollars per share) 4.157  
Weighted average exercise price (in dollars per share) 4.883  
Upper range of exercise price (in dollars per share) $ 5.682  
Options outstanding, exercise price range (in shares) 224,661  
Options outstanding, weighted average remaining contractual life, exercise price range (Year) 2 years 8 months 15 days  
Options exercisable, exercise price range (in shares) 210,921  
Options exercisable, weighted average remaining contractual life, exercise price range (years) 2 years 4 months 17 days  
Weighted average exercise price of options exercisable, exercise price range (in dollars per share) $ 4.821  
Range Two    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Lower range of exercise price (in dollars per share) 6.503  
Weighted average exercise price (in dollars per share) 7.111  
Upper range of exercise price (in dollars per share) $ 8.077  
Options outstanding, exercise price range (in shares) 430,099  
Options outstanding, weighted average remaining contractual life, exercise price range (Year) 2 years 3 months 21 days  
Options exercisable, exercise price range (in shares) 430,099  
Options exercisable, weighted average remaining contractual life, exercise price range (years) 2 years 3 months 21 days  
Weighted average exercise price of options exercisable, exercise price range (in dollars per share) $ 7.111  
Range Three    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted average exercise price (in dollars per share) $ 9.960  
Options outstanding, exercise price range (in shares) 120,180  
Options outstanding, weighted average remaining contractual life, exercise price range (Year) 2 years 10 months 24 days  
Options exercisable, exercise price range (in shares) 120,180  
Options exercisable, weighted average remaining contractual life, exercise price range (years) 2 years 10 months 24 days  
Weighted average exercise price of options exercisable, exercise price range (in dollars per share) $ 9.960  
Range Four    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted average exercise price (in dollars per share) $ 13.287  
Options outstanding, exercise price range (in shares) 25,722  
Options outstanding, weighted average remaining contractual life, exercise price range (Year) 1 year 11 months 23 days  
Options exercisable, exercise price range (in shares) 25,722  
Options exercisable, weighted average remaining contractual life, exercise price range (years) 1 year 11 months 23 days  
Weighted average exercise price of options exercisable, exercise price range (in dollars per share) $ 13.287