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Equity Incentive Plans - Summary of Non-vested Stock Option Activity (Details) - $ / shares
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Summary of the activity of stock option awards, shares      
Options non-vested, beginning balance (in shares) 682,000    
Options granted (in shares) 342,000    
Vested (in shares) (258,000)    
Forfeited (in shares) (294,000)    
Options non-vested, ending balance (in shares) 472,000 682,000  
Options non vested, Wtd. avg. grant date fair value beginning balance (in dollars per share) $ 1.79    
Granted, Wtd. Avg. grant date fair value (in dollars per share) 2.49 $ 0.79 $ 1.59
Vested, Wtd. Avg. grant date fair value (in dollars per share) 2.32    
Forfeited, Wtd. Avg. grant date fair value (in dollars per share) 2.70    
Options non vested, Wtd. avg. grant date fair value ending balance (in dollars per share) $ 1.89 $ 1.79