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Equity - Stock Options - Activity (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Equity      
Outstanding shares, beginning balance 2,964    
Granted (in shares) 88    
Exercised (in shares) (3)    
Forfeited/Expired (in shares) (10)    
Outstanding shares, ending balance 3,039   2,964
Exercisable (in shares) 2,202    
Outstanding - Weighted Average Exercise Price (in dollars per share) $ 2.06    
Granted - Weighted Average Exercise Price (in dollars per share) 1.26    
Exercised - Weighted Average Exercise Price (in dollars per share) 0.89    
Forfeited/Expired - Weighted Average Exercise Price (in dollars per share) 2.93    
Outstanding - Weighted Average Exercise Price (in dollars per share) 2.03   $ 2.06
Exercisable - Weighted Average Exercise Price (in dollars per share) $ 1.71    
Granted - Weighted Average Remaining Contractual Life (in years) 9 years 9 months 3 days    
Exercised - Weighted Average Remaining Contractual Life (in years) 0 years    
Forfeited/Expired - Weighted Average Remaining Contractual Life (in years) 0 years    
Stock options, Contractual life (in years) 6 years 9 months 3 days   6 years 10 months 20 days
Exercisable - Weighted Average Remaining Contractual Life (in years) 6 years 18 days    
Estimated aggregate pretax intrinsic value $ 848    
Total unrecognized compensation 1,800    
Compensation expense $ 42 $ 410