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 ($)
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Jul. 31, 2019
Jul. 30, 2019
May 07, 2019
Apr. 29, 2019
Mar. 13, 2019
Jul. 31, 2019
Nov. 30, 2018
Aug. 31, 2018
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Class of Stock [Line Items]                          
Dividends paid       $ 1,400,000                  
Stock options                          
Class of Stock [Line Items]                          
Antidilutive securities (in shares)                 409,157 0 557,103 0  
Common stock equivalents                          
Class of Stock [Line Items]                          
Dilutive common stock equivalents (in shares)                 2,840,284 2,893,372 2,538,663 2,702,628  
Series B Cumulative Redeemable Preferred Stock                          
Class of Stock [Line Items]                          
Dividends declared per share of preferred stock (in dollars per share)     $ 0.609375   $ 0.609375                
Preferred stock, dividend rate (as percent)     9.75%   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   $ 0.503125                
Preferred stock, dividend rate (as percent)     8.05%   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   $ 0.523438                
Preferred stock, dividend rate (as percent)     8.375%   8.375%           8.375%   8.375%
Stock options                          
Class of Stock [Line Items]                          
Stock-based compensation expense (amount less than for RSUs)                 $ 1,200,000 $ 500,000 $ 2,400,000 $ 800,000  
Unrecognized stock-based compensation expense                 $ 12,000,000   $ 12,000,000    
Unrecognized stock-based compensation expense, period for recognition                     2 years 7 months 1 day    
Vesting period (in years)             3 years            
Dilutive common stock equivalents (in shares)                 0 0 0 0  
Restricted Stock Units (RSUs)                          
Class of Stock [Line Items]                          
Stock-based compensation expense (amount less than for RSUs)                 $ 100,000 $ 0 $ 200,000 $ 0  
Unrecognized stock-based compensation expense                 $ 2,400,000   $ 2,400,000    
Unrecognized stock-based compensation expense, period for recognition                     2 years 9 months 1 day    
Dilutive common stock equivalents (in shares)                 0 0 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 $ 1,400,000                        
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%                      
Subsequent event | Stock options                          
Class of Stock [Line Items]                          
Stock-based compensation expense (amount less than for RSUs)           $ (1,200,000)