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Fair Value Measurements (Tables) | 3 Months Ended
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Mar. 31, 2012
Fair Value Measurements |
Schedule of assets and liabilities measured at fair value on a recurring basis |
|  | Level 1 |  | Level 2 |  | Level 3 |  | Sub-Total |  | Netting and Collateral |  | Total |
As of March 31, 2012 |  |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Commodity contracts |  | $ | 33,122 |  | $ | 133,574 |  | $ | — |  | $ | 166,696 |  | $ | (128,148 | ) | $ | 38,548 |
Foreign currency contracts |  | — |  | 1,270 |  | — |  | 1,270 |  | (1,086 | ) | 184 |
Hedged item commitments |  | — |  | 443 |  | — |  | 443 |  | (27 | ) | 416 |
Total |  | $ | 33,122 |  | $ | 135,287 |  | $ | — |  | $ | 168,409 |  | $ | (129,261 | ) | $ | 39,148 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |
Commodity contracts |  | $ | 25,534 |  | $ | 120,216 |  | $ | — |  | $ | 145,750 |  | $ | (103,865 | ) | $ | 41,885 |
Foreign currency contracts |  | — |  | 2,394 |  | — |  | 2,394 |  | (1,086 | ) | 1,308 |
Hedged item inventories |  | — |  | 438 |  | — |  | 438 |  | — |  | 438 |
Hedged item commitments |  | — |  | 157 |  | — |  | 157 |  | (27 | ) | 130 |
Earn-out |  | — |  | — |  | 4,323 |  | 4,323 |  | — |  | 4,323 |
Total |  | $ | 25,534 |  | $ | 123,205 |  | $ | 4,323 |  | $ | 153,062 |  | $ | (104,978 | ) | $ | 48,084 |
As of December 31, 2011 |  |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Commodity contracts |  | $ | 14,038 |  | $ | 51,033 |  | $ | — |  | $ | 65,071 |  | $ | (43,275 | ) | $ | 21,796 |
Foreign currency contracts |  | — |  | 2,994 |  | — |  | 2,994 |  | (893 | ) | 2,101 |
Hedged item inventories |  | — |  | 3,216 |  | — |  | 3,216 |  | — |  | 3,216 |
Hedged item commitments |  | — |  | 206 |  | — |  | 206 |  | — |  | 206 |
Total |  | $ | 14,038 |  | $ | 57,449 |  | $ | — |  | $ | 71,487 |  | $ | (44,168 | ) | $ | 27,319 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |
Commodity contracts |  | $ | 10,148 |  | $ | 46,754 |  | $ | — |  | $ | 56,902 |  | $ | (43,291 | ) | $ | 13,611 |
Foreign currency contracts |  | — |  | 1,018 |  | — |  | 1,018 |  | (893 | ) | 125 |
Hedged item inventories |  | — |  | 24 |  | — |  | 24 |  | — |  | 24 |
Earn-out |  | — |  | — |  | 4,194 |  | 4,194 |  | — |  | 4,194 |
Total |  | $ | 10,148 |  | $ | 47,796 |  | $ | 4,194 |  | $ | 62,138 |  | $ | (44,184 | ) | $ | 17,954
Schedule of assets and liabilities that are measured at fair value on a recurring basis that utilized Level 3 inputs |
|  | Beginning of Period, (Liabilities) Assets |  | Realized and Unrealized Losses Included in Earnings |  | Settlements |  | End of Period, Liabilities |  | Change in Unrealized Losses Relating to Instruments Still Held as of end of Period |
Three months ended March 31, 2012 |  |  |  |  |  |  |  |  |  |  |
Earn-out |  | (4,194 | ) | (129 | ) | — |  | (4,323 | ) | (129 | )
Total |  | $ | (4,194 | ) | $ | (129 | ) | $ | — |  | $ | (4,323 | ) | $ | (129 | )
Three months ended March 31, 2011 |  |  |  |  |  |  |  |  |  |  |
Commodity contracts, net |  | $ | 90 |  | $ | — |  | $ | (90 | ) | $ | — |  | $ | — |
Earn-out |  | (5,012 | ) | (139 | ) | — |  | (5,151 | ) | (139 | )
Total |  | $ | (4,922 | ) | $ | (139 | ) | $ | (90 | ) | $ | (5,151 | ) | $ | (139 | )

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- Definition Tabular disclosure of the fair value measurement of assets and liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period. + References No definition available. + Details
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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 -Topic 820 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19190-110258 + Details
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