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Condensed Consolidating Financial Information (Schedule Of Condensed Consolidating Statement Of Operations) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2012 | Mar. 31, 2011
Condensed Financial Statements, Captions [Line Items] |  |
Oil and gas revenues | $ 137,906 | $ 58,744
Well services revenues | 660 |
Total revenues | 138,566 | 58,744
Expenses |  |
Lease operating expenses | 9,816 | 5,630
Well services operating expenses | 477 |
Marketing, transportation and gathering expenses | 2,569 | 312
Production taxes | 13,266 | 6,083
Depreciation, depletion and amortization | 38,886 | 13,812
Exploration expenses | 2,835 | 32
Impairment of oil and gas properties | 368 | 1,381
General and administrative expenses | 12,199 | 5,950
Total expenses | 80,416 | 33,200
Operating income (loss) | 58,150 | 25,544
Other income (expense) |  |
Equity in earnings in subsidiaries |  |
Net loss on derivative instruments | (18,586) | (31,666)
Interest expense | (13,899) | (5,198)
Other income | 598 | 312
Total other income (expense) | (31,887) | (36,552)
Income (loss) before income taxes | 26,263 | (11,008)
Income tax benefit | (9,822) | 4,161
Net income (loss) | 16,441 | (6,847)
Parent/Issuer [Member] |  |
Condensed Financial Statements, Captions [Line Items] |  |
Oil and gas revenues |  |
Well services revenues |  |
Total revenues |  |
Expenses |  |
Lease operating expenses |  |
Well services operating expenses |  |
Marketing, transportation and gathering expenses |  |
Production taxes |  |
Depreciation, depletion and amortization |  |
Exploration expenses |  |
Impairment of oil and gas properties |  |
General and administrative expenses | 2,449 | 1,263
Total expenses | 2,449 | 1,263
Operating income (loss) | (2,449) | (1,263)
Other income (expense) |  |
Equity in earnings in subsidiaries | 26,264 | (3,170)
Net loss on derivative instruments |  |
Interest expense | (13,414) | (4,941)
Other income | 177 | 293
Total other income (expense) | 13,027 | (7,818)
Income (loss) before income taxes | 10,578 | (9,081)
Income tax benefit | 5,863 | 2,234
Net income (loss) | 16,441 | (6,847)
Combined Guarantor Subsidiaries [Member] |  |
Condensed Financial Statements, Captions [Line Items] |  |
Oil and gas revenues | 137,906 |
Well services revenues | 660 |
Total revenues | 138,566 | 58,744
Expenses |  |
Lease operating expenses | 9,816 | 5,630
Well services operating expenses | 477 |
Marketing, transportation and gathering expenses | 2,569 | 312
Production taxes | 13,266 | 6,083
Depreciation, depletion and amortization | 38,886 | 13,812
Exploration expenses | 2,835 | 32
Impairment of oil and gas properties | 368 | 1,381
General and administrative expenses | 9,750 | 4,687
Total expenses | 77,967 | 31,937
Operating income (loss) | 60,599 | 26,807
Other income (expense) |  |
Equity in earnings in subsidiaries |  |
Net loss on derivative instruments | (18,586) | (31,666)
Interest expense | (485) | (257)
Other income | 421 | 19
Total other income (expense) | (18,650) | (31,904)
Income (loss) before income taxes | 41,949 | (5,097)
Income tax benefit | (15,685) | 1,927
Net income (loss) | 26,264 | (3,170)
Intercompany Eliminations [Member] |  |
Condensed Financial Statements, Captions [Line Items] |  |
Oil and gas revenues |  |
Well services revenues |  |
Total revenues |  |
Expenses |  |
Lease operating expenses |  |
Well services operating expenses |  |
Marketing, transportation and gathering expenses |  |
Production taxes |  |
Depreciation, depletion and amortization |  |
Exploration expenses |  |
Impairment of oil and gas properties |  |
General and administrative expenses |  |
Total expenses |  |
Operating income (loss) |  |
Other income (expense) |  |
Equity in earnings in subsidiaries | (26,264) | 3,170
Net loss on derivative instruments |  |
Interest expense |  |
Other income |  |
Total other income (expense) | (26,264) | 3,170
Income (loss) before income taxes | (26,264) | 3,170
Income tax benefit |  |
Net income (loss) | $ (26,264) | $ 3,170

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- Definition Exploration expenses (including prospecting) related to oil and gas producing entities and would be included in operating expenses of that entity. Costs incurred in identifying areas that may warrant examination and in examining specific areas that are considered to have prospects of containing oil and gas reserves, including costs of drilling exploratory wells and exploratory-type stratigraphic test wells. Exploration costs may be incurred both before acquiring the related property (sometimes referred to in part as prospecting costs) and after acquiring the property. Principal types of exploration costs, which include depreciation and applicable operating costs of support equipment and facilities and other costs of exploration activities, are: (i) Costs of topographical, geographical and geophysical studies, rights of access to properties to conduct those studies, and salaries and other expenses of geologists, geophysical crews, and others conducting those studies. Collectively, these are sometimes referred to as geological and geophysical or "G&G" costs. (ii) Costs of carrying and retaining undeveloped properties, such as delay rentals, ad valorem taxes on properties, legal costs for title defense, and the maintenance of land and lease records. (iii) Dry hole contributions and bottom hole contributions. (iv) Costs of drilling and equipping exploratory wells. (v) Costs of drilling exploratory-type stratigraphic test wells. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 360 -Section 25 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6474861&loc=d3e64954-109465 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10.(a)(15)) -URI http://asc.fasb.org/extlink&oid=6949603&loc=d3e511914-122862 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-OGP -Chapter 2 -Paragraph 48 -IssueDate 2006-05-01 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 19 -Paragraph 17 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 10 -Paragraph a -Subparagraph 15 -Article 4 + Details
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- Definition The net amount of other income and expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) net gains or losses on securities, (d) unusual costs, (e) gains or losses on foreign exchange transactions, and (f) miscellaneous other income and expense items. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 5 -Section 03 -Paragraph 9 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 210.5-03.9) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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- Definition A tax assessed on oil and gas production. + References No definition available. + Details
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- Definition Revenue from oil and gas-related services including well services (such as drilling, rigs and analytic evaluations), transportation, and other supporting contractor services, during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(d)) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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- Definition Cost incurred related to well drilled or completed for the purpose of supporting production. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 19 -Paragraph 274 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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 210.5-03.2) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=6821537&loc=d3e62136-109447 + Details
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