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Shareholders Equity - Restricted and Performance Stock Units (Details) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Restricted stock awards            
Share Compensation Plan            
Grant date fair value (in dollars per share)         $ 3.71  
Vesting period     3 years      
Vesting percentage     33.33%      
Stock based compensation expense $ 137,207 $ 172,052 $ 274,413 $ 344,104    
Compensation cost not yet recognized $ 713,722   $ 713,722   $ 1,068,819  
Weighted average period for recognition     1 year 3 days   1 year 2 months 12 days  
Number outstanding            
Balance non-vested Restricted Stock at beginning of period (in shares)     290,070 346,499 346,499  
Granted (in shares)     0   111,900  
Vested (in shares)         (168,329)  
Forfeited (in shares)     (22,000)      
Balance non-vested Restricted Stock at end of period (in shares) 268,070   268,070   290,070 346,499
Weighted Average Remaining Life            
Granted (in years)         3 years  
Forfeited (in years)     1 year 8 months 4 days      
Balance non-vested Restricted Stock at end of period (in years)     1 year 1 month 2 days   1 year 7 months 6 days 1 year 8 months 1 day
Performance stock units            
Share Compensation Plan            
Vesting period     3 years      
Stock based compensation expense $ 98,835 0 $ 164,127 $ 0    
Compensation cost not yet recognized $ 438,000 $ 0 $ 438,000 $ 0    
Weighted average period for recognition     1 year 2 months 1 day 0 years    
Performance period     1 year      
Number outstanding            
Balance non-vested Restricted Stock at beginning of period (in shares)     193,167      
Granted (in shares) 0   0   214,000  
Vested (in shares)     (41,667)   (20,833)  
Balance non-vested Restricted Stock at end of period (in shares) 151,500   151,500   193,167  
Weighted Average Remaining Life            
Granted (in years)         1 year 7 months 9 days  
Balance non-vested Restricted Stock at end of period (in years)     1 year 5 months 19 days   1 year 7 months 6 days  
Performance stock units | TSR performance            
Share Compensation Plan            
Grant date fair value (in dollars per share)         $ 4.10  
Vesting percentage     50.00%   50.00%  
Performance stock units | CFDAS            
Share Compensation Plan            
Grant date fair value (in dollars per share)         $ 3.41  
Vesting percentage     50.00%   50.00%  
Maximum | Performance stock units            
Share Compensation Plan            
Percentage of number of shares issued on target award amounts     200.00%      
Minimum | Performance stock units            
Share Compensation Plan            
Percentage of number of shares issued on target award amounts     0.00%