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Shareholders' Equity (Narrative) (Details) - $ / shares
Apr. 15, 2020
Mar. 31, 2020
Dec. 31, 2019
Class Of Stock [Line Items]      
Preferred stock, shares authorized   12,500,000  
Series B [Member]      
Class Of Stock [Line Items]      
Preferred stock, shares authorized   1,450,000 1,450,000
Series C [Member]      
Class Of Stock [Line Items]      
Preferred stock, shares authorized   6,450,000 6,450,000
Subsequent Event [Member]      
Class Of Stock [Line Items]      
Dividends payable, date declared Apr. 15, 2020    
Common stock, dividends declared $ 0.01    
Dividends payable, date to be paid May 20, 2020    
Dividends payable, date of record May 08, 2020    
Subsequent Event [Member] | Series B [Member]      
Class Of Stock [Line Items]      
Preferred stock dividends declared $ 0.453125    
Subsequent Event [Member] | Series C [Member]      
Class Of Stock [Line Items]      
Preferred stock dividends declared $ 0.406250