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Stock-Based Compensation, Stock Options (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Number of Shares under Options Plan [Abstract]    
Exercised (in shares)   (329,076)
Stock Options [Member]    
Number of Shares under Options Plan [Abstract]    
Outstanding at beginning of period (in shares) 3,938,613 5,292,888
Granted (in shares) 1,000,000 2,463,714
Exercised (in shares) (15,000) (1,557,628)
Forfeited and expired (in shares) (448,899) (2,260,361)
Outstanding at end of period (in shares) 4,474,714 3,938,613
Exercisable at end of period (in shares) 2,202,792  
Weighted Average Exercise Price per Option [Abstract]    
Outstanding at beginning of period (in dollars per share) $ 1.9 $ 1.87
Granted (in dollars per share) 1.41 1.7
Exercised (in dollars per share) 1.29 1.12
Forfeited and expired (in dollars per share) 2.63 2.1
Outstanding at end of period (in dollars per share) 1.72 $ 1.9
Exercisable at end of period (in dollars per share) $ 1.88  
Weighted average remaining contractual term [Abstract]    
Outstanding 8 years 7 days 7 years 10 months 28 days
Exercisable 7 years 3 months 10 days  
Weighted-average grant date fair value (in dollars per share) $ 1.06 $ 1.27
Unrecognized compensation expense $ 2,300  
Unrecognized compensation expense, weighted average period 2 years 2 months 12 days  
Aggregate intrinsic value of options outstanding $ 0 $ 26
Aggregate intrinsic value of options exercisable 0 4
Aggregate intrinsic value of options exercised $ 0 $ 500
Stock option exercise, stock issued (in shares)   329,076
Stock Options [Member] | Maximum [Member]    
Weighted average remaining contractual term [Abstract]    
Expiration period 10 years