Quarterly report pursuant to Section 13 or 15(d)

EQUITY AND EARNINGS PER SHARE (Details) (Narrative)

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EQUITY AND EARNINGS PER SHARE (Details) (Narrative) - USD ($)
$ / shares in Units, $ in Millions
 1 Months Ended 3 Months Ended 12 Months Ended
May 04, 2017
Apr. 28, 2017
Feb. 27, 2017
Jan. 31, 2017
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Class of Stock [Line Items]              
Dilutive common stock equivalents (in shares)           1,630,300  
Stock options              
Class of Stock [Line Items]              
Potentially dilutive securities (in shares)         151,234 455,115  
Common stock equivalents              
Class of Stock [Line Items]              
Potentially dilutive securities (in shares)         1,941,409    
Issued to the independent directors              
Class of Stock [Line Items]              
Shares issued to independent directors (in shares)       18,074      
Subsequent event              
Class of Stock [Line Items]              
Dividends paid   $ 1.4          
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 B Cumulative Redeemable Preferred Stock | Subsequent event              
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%            
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 C Cumulative Redeemable Preferred Stock | Subsequent event              
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%            
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%
Series D Cumulative Redemable Preferred Stock | Subsequent event              
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%