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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Cash flows from operating activities:    
Net income (loss) $ (1,040,687) $ (100,709)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Depletion, depreciation and accretion 90,912 52,397
Full cost ceiling impairment 985,190  
(Gain) loss on sale of oil and natural gas properties   7,235
(Gain) loss on sale of Water Assets 3,618  
Deferred income tax provision (benefit) (95,791)  
Stock-based compensation, net (8,035) 12,241
Unrealized loss (gain) on derivative contracts 45,834 77,524
Amortization and write-off of deferred loan costs 1,859 1,022
Amortization of discount and premium 134 235
Reorganization items (283)  
Other income (expense) 535 1,314
Change in assets and liabilities:    
Accounts receivable 3,781 (7,498)
Prepaids and other (9,854) (341)
Accounts payable and accrued liabilities (10,446) (6,711)
Net cash provided by (used in) operating activities (33,233) 36,709
Cash flows from investing activities:    
Oil and natural gas capital expenditures (167,235) (369,304)
Proceeds received from sale of oil and natural gas properties 1,247 1,647
Acquisition of oil and natural gas properties (2,809) (333,470)
Other operating property and equipment capital expenditures (85,613) (79,389)
Proceeds received from sale of other operating property and equipment   2,236
Funds held in escrow and other (7) 153
Net cash provided by (used in) investing activities (254,417) (778,127)
Cash flows from financing activities:    
Proceeds from borrowings 315,234 293,000
Repayments of borrowings (57,000) (32,000)
Debt issuance costs   (4,013)
Common stock issued   63,480
Offering costs and other (441) (2,983)
Net cash provided by (used in) financing activities 257,793 317,484
Net increase (decrease) in cash and cash equivalents (29,857) (423,934)
Cash and cash equivalents at beginning of period 46,866 424,071
Cash and cash equivalents at end of period 17,009 137
Supplemental cash flow information:    
Cash paid for reorganization items 2,041  
Disclosure of non-cash investing and financing activities:    
Asset retirement obligations $ 2,932 $ 2,519