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Property And Equipment (Tables) | 12 Months Ended
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Dec. 31, 2014
Property And Equipment [Abstract] |
Schedule Of Components Of Property And Equipment |
| December 31,
| 2014 |  | 2013
Plant equipment | $ | 777,987 |  | $ | 749,627
Buildings and improvements |  | 159,178 |  |  | 147,663
Land and improvements |  | 73,819 |  |  | 59,481
Railroad track and equipment |  | 40,882 |  |  | 39,852
Construction-in-progress |  | 23,276 |  |  | 3,789
Computers and software |  | 9,305 |  |  | 7,380
Office furniture and equipment |  | 2,127 |  |  | 1,662
Leasehold improvements and other |  | 13,179 |  |  | 12,111
Total property and equipment |  | 1,099,753 |  |  | 1,021,565
Less: accumulated depreciation |  | (274,543) |  |  | (215,519)
Property and equipment, net | $ | 825,210 |  | $ | 806,046

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