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Related Party Transactions (Tables) | 12 Months Ended
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Dec. 31, 2011
Related Party Transactions [Abstract] |
Summary of related party transactions | A summary of the aforementioned related party transactions for the years ended December 31, 2011, 2010 and 2009 is as follows:
|  | Year Ended December 31, |
|  | 2011 |  |  | 2010 |  |  | 2009 |
Net sales to Glencore |  | $ | 564,431 |  |  | $ | 413,408 |  |  | $ | 230,909 |
Purchases from Glencore |  |  | 187,691 |  |  |  | 106,381 |  |  |  | 37,683 |
Purchases from BHH |  |  | 19,543 |  |  |  | 19,690 |  |  |  | 15,218 |
Cash premium to Glencore for put option contracts |  |  | 2,106 |  |  |  | 6,341 |  |  |  | 7,228 |
Glencore's participation in common stock offerings |  |  | - |  |  |  | - |  |  |  | 59,590 |

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- Definition Tabular disclosure of the summary of related party transactions. + References No definition available. + Details
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