Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation - Additional Information (Details)

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Basis of Presentation - Additional Information (Details)
1 Months Ended 3 Months Ended 12 Months Ended
Apr. 27, 2018
USD ($)
Mar. 12, 2018
DrillingProject
May 03, 2018
USD ($)
Mar. 31, 2018
USD ($)
Loan
Dec. 31, 2017
USD ($)
Sep. 07, 2016
Basis Of Presentation [Line Items]            
Number of loans for which maturities will be accelerated | Loan       2    
Oil and natural gas properties and equipment - full cost method, amount excluded from amortization       $ 0 $ 0  
JV Drilling Program | Subsequent Event            
Basis Of Presentation [Line Items]            
Commitment amount by investors     $ 297,600,000      
Monza Energy LLC | JV Drilling Program            
Basis Of Presentation [Line Items]            
Number of drilling projects | DrillingProject   14        
Joint maturity period   3 years        
Percentage of revenue from joint venture       30.00%    
Percentage of estimated well cost       20.00%    
Joint venture ownership percentage contributed to related party   88.94%        
Joint venture ownership percentage   11.06%        
Monza Energy LLC | JV Drilling Program | Subsequent Event            
Basis Of Presentation [Line Items]            
Commitment amount by investors $ 297,600,000          
Revolving Bank Credit Facility Due November 2018            
Basis Of Presentation [Line Items]            
Credit agreement expiration date       Nov. 08, 2018    
Letters of credit outstanding       $ 300,000    
Revolving bank credit facility borrowings outstanding       $ 0 $ 0  
8.50% Unsecured Senior Notes, Due June 2019            
Basis Of Presentation [Line Items]            
Debt instrument maturity date       Jun. 15, 2019 Jun. 15, 2019  
Debt instrument interest rate       8.50% 8.50%  
11.00% 1.5 Lien Term Loan, Due November 2019            
Basis Of Presentation [Line Items]            
Debt instrument maturity date       Nov. 15, 2019 Nov. 15, 2019  
Debt instrument interest rate       11.00% 11.00%  
Debt instrument maturity date       Feb. 28, 2019    
8.50%/10.00% Third Lien PIK Toggle Notes, Due June 2021            
Basis Of Presentation [Line Items]            
Debt instrument maturity date       Jun. 15, 2021 Jun. 15, 2021  
Debt instrument interest rate       8.50% 8.50% 8.50%
Debt instrument paid in kind interest rate       10.00% 10.00%  
Debt instrument maturity date       Feb. 28, 2019