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Stockholders' Equity - Stock-based Compensation (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Stockholders' Equity        
Compensation expense $ 580 $ 430 $ 610 $ 590
Operating cost 485 431 517 591
Reduction in other income 100   100  
Minimum        
Stockholders' Equity        
Operating cost 480   510  
Non Management Directors        
Stockholders' Equity        
Compensation expense 190 50 210 70
Employee        
Stockholders' Equity        
Compensation expense $ 390 $ 380 $ 400 $ 520