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DEBT - Long-Term Debt (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Mar. 01, 2017
Feb. 28, 2017
Dec. 31, 2016
Debt Instrument [Line Items]        
Long-term debt $ 236,100      
Less: current portion of long-term debt (416)      
Less: liabilities subject to compromise 0      
Long-term debt $ 235,711      
7 ½% Senior Notes due 2022 | Senior Notes        
Debt Instrument [Line Items]        
Interest rate 7.50% 7.50% 7.50%  
Long-term debt $ 225,000      
1 ¾% Senior Convertible Notes due 2017 | Convertible Debt        
Debt Instrument [Line Items]        
Interest rate     1.75%  
4.20% Building Loan | Secured Debt        
Debt Instrument [Line Items]        
Interest rate 4.20%      
Long-term debt $ 11,100      
Less: current portion of long-term debt $ (400)      
Predecessor        
Debt Instrument [Line Items]        
Long-term debt       $ 1,427,800
Less: current portion of long-term debt       (408)
Less: liabilities subject to compromise       (1,075,000)
Long-term debt       $ 352,376
Predecessor | 7 ½% Senior Notes due 2022        
Debt Instrument [Line Items]        
Interest rate       7.50%
Predecessor | 7 ½% Senior Notes due 2022 | Senior Notes        
Debt Instrument [Line Items]        
Long-term debt       $ 775,000
Predecessor | 1 ¾% Senior Convertible Notes due 2017        
Debt Instrument [Line Items]        
Interest rate       1.75%
Predecessor | 1 ¾% Senior Convertible Notes due 2017 | Convertible Debt        
Debt Instrument [Line Items]        
Long-term debt       $ 300,000
Predecessor | 4.20% Building Loan        
Debt Instrument [Line Items]        
Interest rate       4.20%
Predecessor | 4.20% Building Loan | Secured Debt        
Debt Instrument [Line Items]        
Long-term debt       $ 11,300
Predecessor | Revolving Credit Facility | Line of Credit        
Debt Instrument [Line Items]        
Long-term debt       $ 341,500