Quarterly report pursuant to Section 13 or 15(d)

EQUITY AND EARNINGS PER SHARE (Narrative) (Details)

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EQUITY AND EARNINGS PER SHARE (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 12 Months Ended
Jan. 31, 2020
Nov. 11, 2019
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Class of Stock [Line Items]          
Dividends paid $ 1.4        
Common stock equivalents          
Class of Stock [Line Items]          
Dilutive common stock equivalents (in shares)     964,335 2,233,692  
Series B Cumulative Redeemable Preferred Stock          
Class of Stock [Line Items]          
Dividends declared per share of preferred stock (in dollars per share)   $ 0.609375      
Preferred stock, dividend rate (as percent)   9.75% 9.75%   9.75%
Series C Cumulative Redeemable Preferred Stock          
Class of Stock [Line Items]          
Dividends declared per share of preferred stock (in dollars per share)   $ 0.503125      
Preferred stock, dividend rate (as percent)   8.05% 8.05%   8.05%
Series D Cumulative Redeemable Preferred Stock          
Class of Stock [Line Items]          
Dividends declared per share of preferred stock (in dollars per share)   $ 0.523438      
Preferred stock, dividend rate (as percent)   8.375% 8.375%   8.375%
Restricted Stock Units (RSUs)          
Class of Stock [Line Items]          
Stock-based compensation expense (amount less than for RSUs)     $ 0.3 $ 0.1  
Unrecognized stock-based compensation expense     $ 1.3    
Unrecognized stock-based compensation expense, period for recognition     1 year 11 months 22 days    
Dilutive common stock equivalents (in shares)     0 0  
Nonemployee | Restricted Stock Units (RSUs)          
Class of Stock [Line Items]          
Vesting period     1 year    
Shares issued upon vesting     0    
Granted (in shares)     0    
Employee | Restricted Stock Units (RSUs)          
Class of Stock [Line Items]          
Granted (in shares)     0