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Major Lessee (Tables) | 12 Months Ended
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Dec. 31, 2011
Major Lessees [Abstract] |
Revenues from lessees that exceeded ten percent of total revenues |
|  | For the Years Ended December 31, |
|  | 2011 |  |  | 2010 |  |  | 2009 |
|  | Revenues |  |  | Percent |  |  | Revenues |  |  | Percent |  |  | Revenues |  |  | Percent |
|  | (Dollars in thousands) |
Alpha Natural Resources |  | $ | 107,267 |  |  |  | 28.4 | % |  | $ | 79,084 |  |  |  | 26.2 | % |  | $ | 64,626 |  |  |  | 25.2 | %
The Cline Group |  | $ | 64,829 |  |  |  | 17.2 | % |  | $ | 62,372 |  |  |  | 20.7 | % |  | $ | 37,369 |  |  |  | 14.6 | %

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- Definition Revenues from lessees that exceeded ten percent of total revenues. + References No definition available. + Details
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- Details
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