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Equity - Equity Incentive Plans (Details) - USD ($)
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Weighted Average Grant Date Fair Value Per Share - Non-option    
Stock-based compensation expense $ 404,000 $ 405,000
Restricted Stock    
Number of Shares - Non-option    
Outstanding at beginning of period (in shares) 5,800 19,800
Restrictions lifted during the period (in shares) (4,600) (12,933)
Forfeited during the period (in shares) (534) (1,067)
Outstanding at end of period (in shares) 666 5,800
Weighted Average Grant Date Fair Value Per Share - Non-option    
Outstanding at beginning of period (in dollars per share) $ 8.89 $ 10.95
Restrictions lifted during the period (in dollars per share) 9.21 11.97
Forfeited during the period (in dollars per share) 9.75 9.75
Outstanding at end of period (in dollars per share) $ 6 $ 8.89
Restricted Stock Units (RSUs)    
Number of Shares - Non-option    
Outstanding at beginning of period (in shares) 272,409 232,409
Granted during the period (in shares) 1,200,000 40,000
Shares issued during the period (in shares) (373,493)  
Forfeited during the period (in shares) (28,837)  
Outstanding at end of period (in shares) 1,070,079 272,409
Weighted Average Grant Date Fair Value Per Share - Non-option    
Outstanding at beginning of period (in dollars per share) $ 13.09 $ 15.06
Granted during the period (in dollars per share) 0.41 1.62
Shares issued during the period (in dollars per share) 3.08  
Forfeited during the period (in dollars per share) 19.47  
Outstanding at end of period (in dollars per share) $ 2.36 $ 13.09
Units | Officers    
Number of Shares - Non-option    
Outstanding at beginning of period (in shares) 168,000  
Outstanding at end of period (in shares) 0 168,000
Weighted Average Grant Date Fair Value Per Share - Non-option    
Stock-based compensation expense $ 3,000 $ 7,000
Equity Incentive Plan    
Number of Shares - Non-option    
Number of shares authorized for issuance 0  
Equity Incentive Plan | Restricted Stock Units (RSUs)    
Weighted Average Grant Date Fair Value Per Share - Non-option    
Number of unrestricted shares Director to receive for vested RSU upon termination from board 1  
2023 Plan    
Number of Shares - Non-option    
Number of shares authorized for issuance 1,400,000  
2023 Plan | Restricted Stock Units (RSUs)    
Number of Shares - Non-option    
Percentage of awards which will vest on each of the first, second and third anniversaries of the grant date 0.50%  
Weighted Average Grant Date Fair Value Per Share - Non-option    
Stock-based compensation expense $ 381,000 329,000
Number of unrestricted shares Director to receive for vested RSU upon termination from board 1  
Restricted Stock | Equity Incentive Plan    
Weighted Average Grant Date Fair Value Per Share - Non-option    
Stock-based compensation expense $ 20,000 $ 83,000