Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Stock Options Activity (Details)

v3.22.1
Stock-Based Compensation - Stock Options Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]    
Beginning balance (in shares) 1,105,938  
Options granted (in shares) 58,000  
Options exercised (in shares) (9,201)  
Ending balance (in shares) 1,154,737 1,105,938
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]    
Beginning balance, Weighted average exercise price (in dollars per share) $ 2.03  
Options granted, Weighted average exercise price (in dollars per share) 1.91  
Options exercised, Weighted average exercise price (in dollars per share) 0  
Ending balance, Weighted average exercise price (in dollars per share) $ 2.04 $ 2.03
Average remaining contractual life 8 years 7 months 6 days 8 years 9 months 18 days
Aggregate intrinsic value, outstanding $ 779 $ 1,535
Exercisable (in shares) 403,130  
Exercisable, Weighted average exercise price (in dollars per share) $ 0.79  
Exercisable, Average remaining contractual life) 7 years 3 months 18 days  
Exercisable, Aggregate intrinsic value $ 529  
Exercise price per share (in dollars per share) $ 0.01