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Stock-Based Compensation, Stock Option Activity (Details) - USD ($)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Stock Option Activity [Roll Forward]    
Outstanding at beginning of period (in shares) 4,895,561 3,987,575
Granted (in shares) 1,070,000 2,660,000
Forfeited/cancelled (in shares) (220,000) (1,603,073)
Exercised (in shares) 0 (148,941)
Outstanding at end of period (in shares) 5,745,561 4,895,561
Exercisable, end of period (in shares) 3,551,395  
Weighted Average Exercise Price [Abstract]    
Outstanding at beginning of period (in dollars per share) $ 3.14 $ 4.29
Granted (in dollars per share) 1.75 2.39
Forfeited/cancelled (in dollars per share) 2.68 5.31
Exercised (in dollars per share) 0 2.35
Outstanding at beginning of period (in dollars per share) 2.9 3.14
Exercisable, end of period (in dollars per share) $ 3.35  
Weighted Average Remaining Contractual Life [Abstract]    
Outstanding end of the period 7 years 4 months 17 days  
Exercisable, end of the period 6 years 8 months 15 days  
Aggregate Intrinsic Value [Abstract]    
Outstanding at end of period $ 30,000  
Exercisable, end of period $ 29,000  
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized [Abstract]    
Common stock price (in dollars per share) $ 1.13  
Weighted-average grant-date fair values of options granted (in dollars per share) $ 1.31 $ 1.78
Unvested option (in shares) 2,194,166 2,737,084
Unrecognized compensation cost $ 2,209,000  
Unrecognized compensation cost, recognition period 1 year 5 months 12 days  
Intrinsic value of stock options $ 0 $ 532,447
Options vested (in shares) 1,452,918 284,583
Total fair value of options vested $ 2,382,842 $ 514,287