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Energy and Related Sales, Net (Tables) | 12 Months Ended
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Dec. 31, 2013
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Summary of Energy and Related Sales Net | The following table summarizes this activity for each of the past three years:
In thousands |  |  | 2013 |  |  |  | 2012 |  |  |  | 2011 |
Energy sales |  | $ | 8,189 |  |  | $ | 5,284 |  |  | $ | 10,992 |
Costs to produce |  |  | (6,784 | ) |  |  | (4,187 | ) |  |  | (9,319 | )
Net energy sales |  |  | 1,405 |  |  |  | 1,097 |  |  |  | 1,673 |
Renewable energy credits |  |  | 1,748 |  |  |  | 5,903 |  |  |  | 7,671 |
Total energy and related sales, net |  | $ | 3,153 |  |  | $ | 7,000 |  |  | $ | 9,344 |

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- Definition Schedule of revenues and expenses directly related to the sales of power generated by the Company not otherwise consumed in operations. + References No definition available. + Details
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