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CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2022 | Jun. 30, 2021
Operating Activities |  |  |
Net income (loss) including noncontrolling interest |  | $ 344,018 | $ (293,864)
Adjustments to reconcile net income (loss) to net cash provided by continuing operations activities |  |  |
Loss (income) from discontinued operations |  | 1,494 | (106)
Depreciation, depletion and amortization |  | 359,980 | 425,566
Unsuccessful exploration well costs and previously suspended exploration costs |  | 34,102 | 633
Amortization of undeveloped leases |  | 7,980 | 8,882
Accretion of asset retirement obligations |  | 23,439 | 22,656
Deferred income tax (benefit) expense |  | 66,691 | (101,195)
Mark to market loss on contingent consideration |  | 129,818 | 76,677
Mark to market loss on crude contracts |  | 100,343 | 284,360
Long-term non-cash compensation |  | 40,467 | 25,318
Impairment of assets |  | 0 | 171,296
(Gain) from sale of assets |  | (35) | 0
Net (increase) decrease in noncash working capital |  | (121,598) | 26,565
Other operating activities, net |  | (27,458) | 39,494
Net cash provided by continuing operations activities |  | 959,241 | 686,282
Investing Activities |  |  |
Property additions and dry hole costs | [1] | (552,825) | (422,841)
Acquisition of oil and gas properties | [1] | (46,491) | (22,473)
Property additions for King's Quay FPS |  | 0 | (17,734)
Proceeds from sales of property, plant and equipment |  | 47 | 269,363
Net cash (required) by investing activities |  | (599,269) | (193,685)
Financing Activities |  |  |
Borrowings on revolving credit facility |  | 100,000 | 165,000
Repayment of revolving credit facility |  | (100,000) | (365,000)
Retirement of debt |  | (200,000) | (576,358)
Debt issuance, net of cost |  | 0 | 541,974
Early redemption of debt cost |  | (3,438) | (34,177)
Distributions to noncontrolling interest |  | (94,854) | (75,238)
Contingent consideration payment |  | (81,742) | 0
Cash dividends paid |  | (50,491) | (38,590)
Withholding tax on stock-based incentive awards |  | (16,697) | (3,895)
Capital lease obligation payments |  | (320) | (371)
Net cash (required) by financing activities |  | (447,542) | (386,655)
Effect of exchange rate changes on cash and cash equivalents |  | (1,595) | 1,552
Net (decrease) increase in cash and cash equivalents |  | (89,165) | 107,494
Cash and cash equivalents at beginning of period |  | 521,184 | 310,606
Cash and cash equivalents at end of period |  | $ 432,019 | $ 418,100
[1] | Certain prior-period amounts have been reclassified to conform to the current period presentation.

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