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CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) | 9 Months Ended
--- | ---
Sep. 30, 2018 | Sep. 30, 2017
Operating activities: |  |
Net income | $ 17,941,000 | $ 111,961,000
Adjustments to reconcile net income to net cash provided from operating activities: |  |
Deferred income tax expense | 38,295,000 | 98,054,000
Depletion, depreciation and amortization and impairment | 510,172,000 | 525,753,000
Exploration dry hole costs | 4,000 | 9,166,000
Abandonment and impairment of unproved properties | 73,244,000 | 52,181,000
Derivative fair value loss (income) | 151,890,000 | (188,326,000)
Cash settlements on derivative financial instruments | (40,272,000) | 16,062,000
Allowance for bad debts | (1,250,000) | 1,050,000
Amortization of deferred financing costs and other | 4,163,000 | 4,184,000
Deferred and stock-based compensation | 41,252,000 | 3,937,000
Gain on the sale of assets | (149,000) | (23,509,000)
Changes in working capital: |  |
Accounts receivable | (49,713,000) | (39,694,000)
Inventory and other | (822,000) | (1,504,000)
Accounts payable | (6,529,000) | 44,715,000
Accrued liabilities and other | 36,721,000 | (13,498,000)
Net cash provided from operating activities | 774,947,000 | 600,532,000
Investing activities: |  |
Additions to natural gas and oil properties | (781,554,000) | (771,067,000)
Additions to field service assets | (1,230,000) | (4,687,000)
Acreage purchases | (50,461,000) | (46,967,000)
Proceeds from disposal of assets | 24,339,000 | 27,583,000
Purchases of marketable securities held by the deferred compensation plan | (34,953,000) | (25,410,000)
Proceeds from the sales of marketable securities held by the deferred compensation plan | 37,311,000 | 28,755,000
Net cash used in investing activities | (806,548,000) | (791,793,000)
Financing activities: |  |
Borrowings on credit facilities | 1,602,000,000 | 1,486,000,000
Repayments on credit facilities | (1,547,000,000) | (1,282,000,000)
Repayment of senior notes | 0 | (500,000)
Dividends paid | (14,950,000) | (14,876,000)
Debt issuance costs | (8,257,000) | (247,000)
Taxes paid for shares withheld | (3,143,000) | (6,971,000)
Change in cash overdrafts | (5,653,000) | 5,588,000
Proceeds from the sales of common stock held by the deferred compensation plan | 8,513,000 | 4,482,000
Net cash provided from financing activities | 31,510,000 | 191,476,000
(Decrease) increase in cash and cash equivalents | (91,000) | 215,000
Cash and cash equivalents at beginning of period | 448,000 | 314,000
Cash and cash equivalents at end of period | $ 357,000 | $ 529,000

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- Definition The net cash inflow or outflow from the excess drawing from an existing cash balance, which will be honored by the bank but reflected as a loan to the drawer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3098-108585 + Details
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- Definition The cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (held-to-maturity or available-for-sale) during the period. + References No definition available. + Details
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- Definition The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585 + Details
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- Definition Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.5) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130534-203044 + Details
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- Definition The cash outflow for the settlement of obligation drawn from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 + Details
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- Definition The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 + Details
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- Definition Dry hole costs from oil and gas producing activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 360 -Section 25 -Paragraph 9 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=96866604&loc=d3e64954-109465 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 23 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62136-109447 + Details
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