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DESCRIPTION OF BUSINESS - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Millions
6 Months Ended
May 02, 2018
May 01, 2018
Aug. 25, 2017
Jun. 30, 2018
Jun. 30, 2017
8.125% Series A Cumulative Redeemable Preferred Stock          
Business Acquisition [Line Items]          
Preferred Stock dividend rate, percentage     7.875% 7.875% 7.875%
Mountain Merger Sub Corporation          
Business Acquisition [Line Items]          
Consideration for business acquisition $ 900.0        
Percentage of consideration in shares 50.00%        
Percentage of consideration in cash payment 50.00%        
Mountain Merger Sub Corporation | 8.125% Series H Cumulative Redeemable Preferred Stock          
Business Acquisition [Line Items]          
Preferred Stock dividend rate, percentage   8.125%      
Preferred Stock, par value (in dollars per share)   $ 0.01      
Mountain Merger Sub Corporation | 8.125% Series A Cumulative Redeemable Preferred Stock          
Business Acquisition [Line Items]          
Preferred Stock dividend rate, percentage   8.125%      
Preferred Stock, par value (in dollars per share)   $ 0.01