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Shareholders' Equity (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Earnings Per Share [Line Items]          
Common stock, shares authorized 50,000,000   50,000,000    
Common stock, no par value $ 0   $ 0    
Preferred stock, shares authorized 10,000,000   10,000,000    
Preferred stock, no par value $ 0   $ 0    
Preferred stock dividends     $ 18,000 $ 18,000  
Preferred stock, dividends, per share, cash paid     $ 30 $ 30  
Common Stock [Member]          
Earnings Per Share [Line Items]          
Preferred stock dividends $ 0 $ 0 $ 0 $ 0  
Series A preferred stock [Member]          
Earnings Per Share [Line Items]          
Preferred stock, shares issued 600,000   600,000   600,000
Preferred stock, shares outstanding 600,000   600,000   600,000