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Liability Extinguishment | 12 Months Ended
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Dec. 31, 2015
Liability Extinguishment [Abstract] |
Liability Extinguishment | (10) Liability Extinguishment During the 2013 second quarter we concluded that an approximate $4.3 million liability we recorded during 2006 upon the purchase of Sunrise Coal relating to a terminated coal contract was no longer required. The amount had no effect on cash flows.

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