Quarterly report pursuant to Section 13 or 15(d)

EQUITY AND EARNINGS PER SHARE (Narrative) (Details)

v3.19.1
EQUITY AND EARNINGS PER SHARE (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
 1 Months Ended 3 Months Ended 12 Months Ended
May 07, 2019
Apr. 29, 2019
Mar. 13, 2019
Nov. 30, 2018
Aug. 31, 2018
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Stock options                
Class of Stock [Line Items]                
Antidilutive securities (in shares)           706,694 0  
Common stock equivalents                
Class of Stock [Line Items]                
Dilutive common stock equivalents (in shares)           2,233,692 2,509,765  
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 Redemable 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%
Stock options                
Class of Stock [Line Items]                
Stock-based compensation expense (amount less than for RSUs)           $ 1.2 $ 0.3  
Unrecognized stock-based compensation expense           $ 12.0    
Unrecognized stock-based compensation expense, period for recognition           2 years 1 month 1 day    
Vesting period (in years)       3 years        
Dilutive common stock equivalents (in shares)           0 0  
Restricted Stock Units (RSUs)                
Class of Stock [Line Items]                
Stock-based compensation expense (amount less than for RSUs)           $ 0.1    
Unrecognized stock-based compensation expense           $ 0.1    
Unrecognized stock-based compensation expense, period for recognition           5 months 15 days    
Dilutive common stock equivalents (in shares)           0 0  
Restricted Stock Units (RSUs) | Directors                
Class of Stock [Line Items]                
Vesting period (in years)         1 year      
Subsequent event                
Class of Stock [Line Items]                
Dividends paid   $ 1.4            
Subsequent event | 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%              
Subsequent event | 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%              
Subsequent event | Series D Cumulative Redemable 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%