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CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS (USD $) In Thousands, unless otherwise specified | 9 Months Ended
--- | ---
Sep. 30, 2013 | Sep. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES |  |
Net income | $ 201,827 | $ 90,864
Adjustments to reconcile net income to cash provided by operating activities: |  |
Depreciation, depletion and amortization | 469,022 | 335,421
Deferred income tax expense | 107,235 | 42,714
(Gain) / loss on sale of assets | (4,601) | (67,042)
Exploration expense | 807 | 12,118
Unrealized (gain) / loss on derivative instruments |  | 449
Amortization of debt issuance costs | 2,767 | 4,300
Stock-based compensation, pension and other | 36,684 | 37,518
Changes in assets and liabilities: |  |
Accounts receivable, net | (6,321) | 10,747
Inventories | (6,665) | 3,582
Other current assets | (1,547) | (1,125)
Accounts payable and accrued liabilities | (19,837) | (16,391)
Income taxes | (3,639) | 205
Other assets and liabilities | 228 | 1,752
Stock-based compensation tax benefit | (9,284) |
Net cash provided by operating activities | 766,676 | 455,112
CASH FLOWS FROM INVESTING ACTIVITIES |  |
Capital expenditures | (843,528) | (669,198)
Proceeds from sale of assets | 15,174 | 132,740
Investment in equity method investment | (8,624) | (4,488)
Net cash used in investing activities | (836,978) | (540,946)
CASH FLOWS FROM FINANCING ACTIVITIES |  |
Borrowings from debt | 585,000 | 280,000
Repayments of debt | (510,000) | (168,000)
Stock-based compensation tax benefit | 9,284 |
Dividends paid | (16,830) | (12,561)
Capitalized debt issuance costs |  | (5,005)
Other | 44 | (1,010)
Net cash provided by financing activities | 67,498 | 93,424
Net (decrease) / increase in cash and cash equivalents | (2,804) | 7,590
Cash and cash equivalents, beginning of period | 30,736 | 29,911
Cash and cash equivalents, end of period | $ 27,932 | $ 37,501

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- Definition The cash inflow to dispose of long lived physical asset and mineral interests in oil and gas properties used for the normal oil and gas operation and other Long-term assets. + References No definition available. + Details
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- Definition Amount of noncash expense included in interest expense to issue debt and obtain financing associated with the related debt instruments. Alternate captions include noncash interest expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 8 -Article 9 + Details
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- Definition Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3521-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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- Definition Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1377-109256 + Details
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- Definition The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition The cash outflow for exploration and development of oil and gas properties. It includes cash payments related to development of oil and gas wells drilled at previously untested geologic structures (to determine the presence of oil or gas) and wells drilled at sites where the presence of oil or gas has already been established (to extract the oil or gas). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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