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Commitments and Contingencies - Firm Transportation Contracts and Throughput Agreements (Details) (Transportation And Throughput Agreements, USD $) In Thousands, unless otherwise specified | Dec. 31, 2012
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Transportation And Throughput Agreements |
Years ending December 31 |
2013 | $ 26,653
2014 | 19,671
2015 | 12,977
2016 | 11,346
2017 | 11,315
Thereafter | 14,105
Total future obligation | $ 96,067

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