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SUBSEQUENT EVENTS (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
May 02, 2017
Apr. 24, 2017
Mar. 23, 2017
Mar. 31, 2017
Mar. 31, 2016
Apr. 23, 2017
Dec. 31, 2016
Subsequent events              
Dividends, preferred stock       $ 6,891 $ 6,891    
Carrying value       2,992,893     $ 3,087,941
Proceeds from parent contribution       17,621 0    
Distributions to parent       16,652 $ 0    
7.500% Senior notes              
Subsequent events              
Carrying value       $ 122,908     $ 123,008
Subsequent Event              
Subsequent events              
Proceeds from parent contribution $ 166,300            
Distributions to parent $ 166,300            
Subsequent Event | 7.500% Senior notes              
Subsequent events              
Carrying value           $ 115,000  
Redemption price as percentage   100.00%          
Series A LLC Preferred Shares              
Subsequent events              
Dividends, preferred stock     $ 6,900        
Cash distribution declared (in dollars per share)     $ 0.460938