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Shareholders Equity (Narrative) (Details) - $ / shares
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Shareholders Equity [Line Items]      
Capital shares authorized 50,210,000    
Common stock, shares authorized 50,000,000 50,000,000  
Common stock, par value $ 0.01 $ 0.01  
Preferred stock, shares authorized 210,000    
Preferred stock, par value $ 100    
Preferred stock, shares issued 173,282 173,282  
Preferred stock, shares outstanding 173,282 173,282  
Preferred Class A [Member]      
Shareholders Equity [Line Items]      
Preferred stock, shares authorized 10,000    
Preferred Class B [Member]      
Shareholders Equity [Line Items]      
Preferred stock, shares authorized 200,000    
Series A 3% Preferred Stock [Member]      
Shareholders Equity [Line Items]      
Preferred stock, shares authorized 1,533 1,533  
Preferred stock, par value $ 100 $ 100  
Preferred stock, shares issued 1,435 1,435  
Preferred stock, shares outstanding 1,435 1,435  
Preferred stock, dividend percentage 3.00% 3.00% 3.00%
Preferred stock, dividend per share $ 3.00    
Series B-1 8.48% Preferred Stock [Member]      
Shareholders Equity [Line Items]      
Preferred stock, shares authorized 200,000 200,000  
Preferred stock, par value $ 100 $ 100  
Preferred stock, shares issued 171,847 171,847  
Preferred stock, shares outstanding 171,847 171,847  
Preferred stock, dividend percentage 8.48% 8.48% 8.48%
Preferred stock, dividend per share $ 8.48