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CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) | 9 Months Ended
--- | ---
Sep. 30, 2021 | Sep. 30, 2020
Operating activities: |  |
Net income (loss) | $ (479,588,000) | $ (750,178,000)
Adjustments to reconcile net income (loss) to net cash provided from operating activities: |  |
Deferred income tax (benefit) expense | (35,477,000) | (29,411,000)
Depletion, depreciation and amortization and impairment of proved properties | 272,128,000 | 382,734,000
Abandonment and impairment of unproved properties | 7,206,000 | 16,604,000
Derivative fair value loss (income) | 959,782,000 | (102,182,000)
Cash settlements on derivative financial instruments | (239,165,000) | 305,243,000
Divestiture contract obligation accretion, net of gain | 8,467,000 | 486,689,000
Allowance for bad debt | 0 | 400,000
Amortization of deferred financing costs and other | 6,253,000 | 5,023,000
Deferred and stock-based compensation | 119,946,000 | 38,380,000
Gain on the sale of assets | (724,000) | (112,443,000)
Loss (gain) on early extinguishment of debt | 98,000 | (14,093,000)
Changes in working capital: |  |
Accounts receivable | (116,204,000) | 91,343,000
Other current assets | (3,574,000) | (5,786,000)
Accounts payable | 34,313,000 | (52,820,000)
Accrued liabilities and other | (58,172,000) | (80,529,000)
Net cash provided from operating activities | 475,289,000 | 178,974,000
Investing activities: |  |
Additions to natural gas properties | (311,709,000) | (321,849,000)
Additions to field service assets | (720,000) | (2,493,000)
Acreage purchases | (20,302,000) | (18,554,000)
Proceeds from disposal of assets | 237,000 | 246,083,000
Purchases of marketable securities held by the deferred compensation plan | (24,396,000) | (14,855,000)
Proceeds from the sales of marketable securities held by the deferred compensation plan | 27,974,000 | 20,974,000
Net cash used in investing activities | (328,916,000) | (90,694,000)
Financing activities: |  |
Borrowings on credit facilities | 1,250,000,000 | 1,676,000,000
Repayments on credit facilities | (1,922,000,000) | (1,447,000,000)
Issuance of senior notes | 600,000,000 | 850,000,000
Repayment of senior or senior subordinated notes | (63,324,000) | (1,120,634,000)
Treasury stock purchases | 0 | (22,992,000)
Debt issuance costs | (8,799,000) | (12,735,000)
Taxes paid for shares withheld | (9,267,000) | (2,841,000)
Change in cash overdrafts | 1,515,000 | (8,797,000)
Proceeds from the sales of common stock held by the deferred compensation plan | 5,522,000 | 690,000
Net cash (used in) provided from financing activities | (146,353,000) | (88,309,000)
Increase in cash and cash equivalents | 20,000 | (29,000)
Cash and cash equivalents at beginning of period | 458,000 | 546,000
Cash and cash equivalents at end of period | $ 478,000 | $ 517,000

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