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Fair-Value Measurements (Tables) | 9 Months Ended
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Sep. 30, 2013
Fair Value Disclosures [Abstract] |
Placement Of Assets And Liabilities Within The Fair Value Hierarchy Levels | The following table sets forth by level within the fair value hierarchy our financial assets and liabilities that were accounted for at fair value on a recurring basis at the dates indicated.
|  | Fair Value at |  | Fair Value at
|  | September 30, 2013 |  | December 31, 2012
Recurring Fair Value Measures |  | Level 1 |  | Level 2 |  | Level 3 |  | Level 1 |  | Level 2 |  | Level 3
Commodity derivatives: |  |  |  |  |  |  |  |  |  |  |  |
Assets |  | $ | 1,053 |  |  | $ | — |  |  | $ | — |  |  | $ | 758 |  |  | $ | — |  |  | $ | — |
Liabilities |  | $ | (851 | ) |  | $ | — |  |  | $ | — |  |  | $ | (3,357 | ) |  | $ | — |  |  | $ | — |

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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19190-110258 + Details
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