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Stockholders' Equity - Stock-based Compensation (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Stockholders' Equity    
Compensation expense $ 170 $ 670
Operating cost 184 568
Costs and Expenses    
Stockholders' Equity    
Compensation expense   570
Other income    
Stockholders' Equity    
Compensation expense   100
Non Management Directors    
Stockholders' Equity    
Compensation expense   260
Director and Consultants    
Stockholders' Equity    
Compensation expense 150  
Employee    
Stockholders' Equity    
Compensation expense $ 20 $ 410