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Equity - Stock Options - Activity (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Equity      
Outstanding shares, ending balance 2,697 2,131  
Granted (in shares) 1,065 743  
Exercised (in shares) (327) (117)  
Forfeited/Expired/Exchanged - (in shares) (471) (60)  
Outstanding shares, beginning balance 2,964 2,697 2,131
Exercisable at December 31, Options (in shares) 2,178 2,380  
Outstanding - Weighted Average Exercise Price (in dollars per share) $ 2.18 $ 2.53  
Exercise price (in dollars per share) 3.15 1.07  
Exercised - Weighted Average Exercise Price (in dollars per share) 1.41 1.08  
Forfeited/Expired/Exchanged - Weighted Average Exercise Price (in dollars per share) 5.70 2.88  
Outstanding - Weighted Average Exercise Price (in dollars per share) 2.06 2.18 $ 2.53
Exercisable - Weighted Average Exercise Price (in dollars per share) $ 1.72 $ 2.26  
Granted - Weighted Average Remaining Contractual Life (in years) 8 years 4 months 24 days 9 years 2 months 23 days  
Stock options, Contractual life (in years) 6 years 10 months 20 days 7 years 6 months 10 days 7 years 11 months 26 days
Stock options, Contractual life (in years)   7 years 6 months 10 days  
Exercisable - Weighted Average Remaining Contractual Life (in years) 6 years 2 months 12 days 7 years 5 months 23 days  
Estimated aggregate pretax intrinsic value $ 513    
Total unrecognized compensation $ 1,725