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STOCKHOLDER'S EQUITY (DEFICIT) - Successor Common Stock and Special Warrants (Details) - $ / shares
Sep. 30, 2019
May 01, 2019
Dec. 31, 2018
Class of Stock [Line Items]      
Common stock, shares issued (in shares) 145,885,996    
Common stock, shares outstanding (in shares) 145,885,996    
Class A Common Stock      
Class of Stock [Line Items]      
Common stock, shares issued (in shares) 57,670,714 56,861,941 32,292,944
Common stock, shares outstanding (in shares) 57,670,714    
Common stock, par value (in dollars per share) $ 0.001   $ 1.000
Common stock, shares authorized (in shares) 1,000,000,000   400,000,000
Class B Common Stock      
Class of Stock [Line Items]      
Common stock, shares issued (in shares) 6,925,976 6,947,567 555,556
Common stock, shares outstanding (in shares) 6,925,976    
Common stock, par value (in dollars per share) $ 0.001   $ 1.000
Common stock, shares authorized (in shares) 1,000,000,000   150,000,000
Special Warrants      
Class of Stock [Line Items]      
Common stock, shares issued (in shares) 81,289,306    
Common stock, shares outstanding (in shares) 81,289,306