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Energy and Related Sales, Net (Tables) | 12 Months Ended
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Dec. 31, 2015
Text Block [Abstract] |
Summary of Energy and Related Sales Net | The following table summarizes this activity for each of the past three years:
|  | Year ended December 31 |
In thousands |  |  | 2015 |  |  |  | 2014 |  |  |  | 2013 |
Energy sales |  | $ | 5,315 |  |  | $ | 11,886 |  |  | $ | 8,189 |
Costs to produce |  |  | (4,428 | ) |  |  | (6,204 | ) |  |  | (6,784 | )
Net |  |  | 887 |  |  |  | 5,682 |  |  |  | 1,405 |
Renewable energy credits |  |  | 4,777 |  |  |  | 2,245 |  |  |  | 1,748 |
Total |  | $ | 5,664 |  |  | $ | 7,927 |  |  | $ | 3,153 |

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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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