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Supplemental Cash Flow Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2016
Oct. 01, 2016
Dec. 31, 2017
Dec. 31, 2015
Successor        
Supplemental Disclosure of Cash Flow Information        
Cash paid for reorganization items $ 0   $ 0  
Cash paid for interest, net of amounts capitalized (1,183)   (2,438)  
Cash (paid) received for income taxes 0   4,348  
Supplemental Disclosure of Noncash Investing and Financing Activities        
Cumulative effect of adoption of ASU 2015-02 0   0  
Property, plant and equipment transferred in settlement of contract 0   0  
Change in accrued capital expenditures 10,630   (28,999)  
Equity issued for debt (13,001)   (268,779)  
Preferred stock dividends paid in common stock 0   0  
Long-term debt issued, including derivative and net of discount, for asset acquisition and termination of gathering agreement $ 0   $ 0  
Predecessor        
Supplemental Disclosure of Cash Flow Information        
Cash paid for reorganization items   $ (55,606)   $ 0
Cash paid for interest, net of amounts capitalized   (104,609)   (296,386)
Cash (paid) received for income taxes   (28)   (88)
Supplemental Disclosure of Noncash Investing and Financing Activities        
Cumulative effect of adoption of ASU 2015-02   (247,566)   0
Property, plant and equipment transferred in settlement of contract   215,635   0
Change in accrued capital expenditures   25,045   177,586
Equity issued for debt   (4,409)   (63,299)
Preferred stock dividends paid in common stock   0   (16,188)
Long-term debt issued, including derivative and net of discount, for asset acquisition and termination of gathering agreement   $ 0   $ (50,310)