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Stockholders' Equity - Stock-based Compensation (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Stockholders' Equity    
Compensation expense $ 60 $ 30
Operating cost $ 57 32
Non Management Directors    
Stockholders' Equity    
Compensation expense   20
Employee    
Stockholders' Equity    
Compensation expense   $ 10