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SUBSEQUENT EVENTS (Declaration of Dividends) (Narrative) (Details) - $ / shares
6 Months Ended
Aug. 06, 2020
May 07, 2020
Jun. 30, 2020
Series A Preferred Stock [Member]      
Subsequent Event [Line Items]      
Dividends payable date   Jul. 15, 2020  
Dividends payable, date of record   Jul. 01, 2020  
Dividend payable, amount per share   $ 17.65  
Series A Preferred Stock [Member] | Subsequent Event [Member]      
Subsequent Event [Line Items]      
Dividends declared date Aug. 06, 2020    
Dividends payable date Oct. 15, 2020    
Dividends payable, date of record Oct. 01, 2020    
Series B Preferred Stock [Member]      
Subsequent Event [Line Items]      
Preferred Stock, Dividends Per Share, Declared     $ 1.7500
Series B Preferred Stock [Member] | Subsequent Event [Member]      
Subsequent Event [Line Items]      
Dividends declared date Aug. 06, 2020    
Dividends payable date Oct. 15, 2020    
Dividends payable, date of record Oct. 01, 2020    
Dividend payable, amount per share $ 0.4375