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CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Cash flows from operating activities:    
Net loss $ (474,180) $ (772,259)
Adjustments to reconcile net loss to net cash provided by operating activities:    
Depreciation, depletion and amortization 166,707 226,309
Write-down of oil and gas properties 284,337 1,011,385
Accretion expense 30,147 19,315
Deferred income tax provision (benefit) 10,947 (280,760)
Settlement of asset retirement obligations (15,106) (59,826)
Non-cash stock compensation expense 6,407 9,163
Non-cash derivative expense 1,261 10,854
Non-cash interest expense 14,278 13,210
Other non-cash expense 6,081 0
Change in current income taxes 21,584 7,211
Decrease in accounts receivable 3,968 33,895
Increase in other current assets (4,426) (1,090)
Increase (decrease) in accounts payable 3,217 (11,592)
Decrease in other current liabilities (14,222) (6,753)
Other (8,107) (82)
Net cash provided by operating activities 32,893 198,980
Cash flows from investing activities:    
Investment in oil and gas properties (200,622) (385,528)
Proceeds from sale of oil and gas properties, net of expenses 0 11,643
Investment in fixed and other assets (1,231) (1,455)
Change in restricted funds 1,046 179,475
Net cash used in investing activities (200,807) (195,865)
Cash flows from financing activities:    
Proceeds from bank borrowings 477,000 5,000
Repayments of bank borrowings (135,500) (5,000)
Repayments of building loan (285) 0
Deferred financing costs (900) 0
Net payments for share-based compensation (752) (3,127)
Net cash provided by (used in) financing activities 339,563 (3,127)
Effect of exchange rate changes on cash (9) (2)
Net change in cash and cash equivalents 171,640 (14)
Cash and cash equivalents, beginning of period 10,759 74,488
Cash and cash equivalents, end of period $ 182,399 $ 74,474