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 6 Months Ended 12 Months Ended
Aug. 02, 2022
May 02, 2022
May 01, 2022
Jan. 31, 2022
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Jul. 12, 2021
Class of Stock                    
Dividends paid   $ 1.4   $ 1.4            
Preferred dividends in arrears             $ 5.6      
Symphony Ventures                    
Class of Stock                    
Total commitment                   $ 10.0
SLP                    
Class of Stock                    
Majority ownership percentage (as percent)                   90.00%
SLP | Symphony Ventures                    
Class of Stock                    
Minority interest percentage (as percent)                   10.00%
Series B Cumulative Redeemable Preferred Stock                    
Class of Stock                    
Dividends declared per share of preferred stock (in usd per share)   $ 0.609375 $ 0.609375 $ 0.609375            
Preferred stock, dividend rate (as percent)   9.75% 9.75% 9.75%     9.75%   9.75%  
Series B Cumulative Redeemable Preferred Stock | Subsequent event                    
Class of Stock                    
Dividends declared per share of preferred stock (in usd per share) $ 0.609375                  
Preferred stock, dividend rate (as percent) 9.75%                  
Series C Cumulative Redeemable Preferred Stock                    
Class of Stock                    
Dividends declared per share of preferred stock (in usd per share)   $ 0.503125 $ 0.503125 $ 0.503125            
Preferred stock, dividend rate (as percent)   8.05% 8.05% 8.05%     8.05%   8.05%  
Series C Cumulative Redeemable Preferred Stock | Subsequent event                    
Class of Stock                    
Dividends declared per share of preferred stock (in usd per share) $ 0.503125                  
Preferred stock, dividend rate (as percent) 8.05%                  
Series D Cumulative Redeemable Preferred Stock                    
Class of Stock                    
Dividends declared per share of preferred stock (in usd per share)   $ 0.523438 $ 0.523438 $ 0.523438            
Preferred stock, dividend rate (as percent)   8.375% 8.375% 8.375%     8.375%   8.375%  
Series D Cumulative Redeemable Preferred Stock | Subsequent event                    
Class of Stock                    
Dividends declared per share of preferred stock (in usd per share) $ 0.523438                  
Preferred stock, dividend rate (as percent) 8.375%                  
Employee                    
Class of Stock                    
Stock-based compensation expense             $ (0.6)      
Restricted Stock Units (RSUs)                    
Class of Stock                    
Options (in shares)         0 0 0 0    
Stock-based compensation expense         $ 0.1 $ 0.1 $ 0.1 $ 0.2    
Unrecognized stock-based compensation expense         $ 0.1   $ 0.1      
Unrecognized stock-based compensation expense, period for recognition             3 months 18 days      
Granted (in shares)             0      
Shares issued upon vesting (in shares)             23,605      
Restricted Stock Units (RSUs) | Scenario, Adjustment                    
Class of Stock                    
Stock-based compensation expense             $ (0.3)      
Restricted Stock Units (RSUs) | Employee                    
Class of Stock                    
Shares issued upon vesting (in shares)             23,605      
Non option granted (in shares)             0      
Restricted Stock Units (RSUs) | Nonemployee                    
Class of Stock                    
Vesting period             1 year      
Shares issued upon vesting (in shares)             87,757      
Stock options                    
Class of Stock                    
Options (in shares)         0 0 0 0    
Stock-based compensation expense         $ 0.1 $ 0.2 $ 0.2 $ 0.4    
Unrecognized stock-based compensation expense         $ 0.2   $ 0.2      
Unrecognized stock-based compensation expense, period for recognition             1 year      
Common stock equivalents | Restricted Stock Units (RSUs)                    
Class of Stock                    
Options (in shares)         100,659 1,253,675 75,829 1,253,675