Quarterly report pursuant to Section 13 or 15(d)

SUBSEQUENT EVENT (Details)

v3.8.0.1
SUBSEQUENT EVENT (Details) - USD ($)
Nov. 01, 2017
Sep. 30, 2017
Dec. 31, 2016
Subsequent Event [Line Items]      
Interest rate   8.00%  
Long-term Debt   $ 855,000,000 $ 832,625,125
Term Loan [Member] | Subsequent Event [Member]      
Subsequent Event [Line Items]      
Aggregate principle amount $ 500,000,000    
Interest rate 3.00%    
Prepayment rate requirement 100.00%    
Outstanding balance period used for yield maintenance rate 1 year    
Call protection, multiplier interest rate 7.00%    
Call protection, multiplier interest rate if occurring in the first term 7.00%    
Line of credit facility, call protection, multiplier interest rate, first term 18 months    
Call protection, multiplier interest rate if occurring in the second term 3.00%    
Call protection, multiplier interest rate if occurring in the third term 1.00%    
Term Loan [Member] | LIBOR [Member] | Subsequent Event [Member]      
Subsequent Event [Line Items]      
Interest rate 1.00%    
Variable rate 7.75%    
Term Loan, Initial Loans [Member] | Subsequent Event [Member]      
Subsequent Event [Line Items]      
Aggregate principle amount $ 300,000,000    
Term Loan, Delayed Draw Loans [Member] | Subsequent Event [Member]      
Subsequent Event [Line Items]      
Aggregate principle amount $ 100,000,000    
Debt term 18 months    
Unused capacity commitment fee 2.00%    
Term Loan, Incremental Loans [Member] | Subsequent Event [Member]      
Subsequent Event [Line Items]      
Aggregate principle amount $ 100,000,000    
8% Senior Notes [Member] | Senior Notes [Member]      
Subsequent Event [Line Items]      
Interest rate   8.00%  
Long-term Debt   $ 700,000,000  
Maximum [Member] | Term Loan [Member] | Subsequent Event [Member]      
Subsequent Event [Line Items]      
Line of credit facility, call protection, multiplier interest rate, second term 30 months    
Line of credit facility, call protection, multiplier interest rate, third term 42 months    
Line of credit facility, covenant compliance, debt to EBITDAX ratio 3.75    
Maximum [Member] | 8% Senior Notes [Member] | Senior Notes [Member]      
Subsequent Event [Line Items]      
Long-term Debt   $ 30,000,000  
Minimum [Member] | Term Loan [Member] | Subsequent Event [Member]      
Subsequent Event [Line Items]      
Line of credit facility, call protection, multiplier interest rate, second term 18 months    
Line of credit facility, call protection, multiplier interest rate, third term 30 months    
Line of credit facility, covenant compliance, cash to debt ratio 1.3    
Line of credit facility, covenant compliance, cash and cash equivalents including undrawn credit commitments threshold $ 20,000,000