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STOCK BASED COMPENSATION PLANS - Summary of Grants (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Amortization to compensation expense $ (4,128) $ (3,752) $ (11,342) $ (10,303)
Predecessor        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Amortization to compensation expense $ 0 $ 0 $ 0 $ (290)
Restricted Stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of restricted shares granted 0 0 726,327 1,687,513
Weighted Average Fair Value (in dollars) $ 0 $ 0 $ 13,353 $ 28,637
Amortization to compensation expense $ (4,103) $ (3,274) $ (11,243) $ (8,543)
Stock Options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of options granted 0 0 670,256 0
Weighted Average Fair Value of Options (in dollars) $ 0 $ 0 $ 1,441 $ 0
LP Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of restricted shares granted     0  
Amortization to compensation expense $ (25) $ (478) $ (99) $ (1,470)