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Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Common Stock
Employees
Common Stock
Executive Officer
Common Stock
Consultants
Common Stock
Director
Common Stock
Paid-in Capital
Employees
Paid-in Capital
Executive Officer
Paid-in Capital
Consultants
Paid-in Capital
Accumulated Deficit
Noncontrolling Interest
Employees
Executive Officer
Consultants
Total
Balances at Dec. 31, 2021         $ 20       $ 103,039 $ (28,779) $ 662       $ 74,942
Balances (in shares) at Dec. 31, 2021         19,571,119                    
Increase (Decrease) in Stockholders' Equity [Roll Forward]                              
Compensation expense related to stock options and restricted stock                 534           534
Shares issued in connection with stock grant           $ 50 $ 281         $ 50 $ 281    
Shares issued in connection with stock grant (in shares) 33,557 178,727                          
Shares issued in connection with restricted stock grants (in shares)       50,000                      
Shares issued in connection with sale transaction               $ 33 97         $ 33 97
Shares issued in connection with sale transaction (in shares)     20,064   65,275                    
Shares repurchased in exchange for withholding taxes           (357) $ (85)         (357) $ (85)    
Shares repurchased in exchange for withholding taxes (in shares) (240,000) (53,882)                          
Net loss                   (4,018) (1,338)       (5,356)
Balances at Dec. 31, 2022         $ 20       103,592 (32,797) (676)       70,139
Balances (in shares) at Dec. 31, 2022         19,624,860                    
Increase (Decrease) in Stockholders' Equity [Roll Forward]                              
Compensation expense related to stock options and restricted stock                 161           161
Shares issued in connection with stock grant           $ 10           $ 10      
Shares issued in connection with stock grant (in shares) 7,300                            
Shares issued in connection with restricted stock grants (in shares)       40,000                      
Shares issued in connection with sale transaction               $ 45           $ 45  
Shares issued in connection with sale transaction (in shares)     66,668                        
Shares issued on exercises of stock options, net of shares surrendered for cashless exercises                 27           27
Shares issued on exercises of stock options, net of shares surrendered for cashless exercises (in shares)         61,225                    
Contra-revenue related to warrants granted to licensee                 26           26
Forfeitures of restricted stock grants         (5,000)                    
Net loss                   (21,052) (1,185)       (22,237)
Balances at Dec. 31, 2023         $ 20       $ 103,861 $ (53,849) $ (1,861)       $ 48,171
Balances (in shares) at Dec. 31, 2023         19,795,053