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Other Operating (Income) Expenses, net (Tables) | 12 Months Ended
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Dec. 31, 2014
Other Operating (Income) Expenses, net [Abstract] |
Schedule of Other Operating Expenses (Income), Net | Other operating (income) expenses, net consist of the following:
Year ended December 31, |  | 2014 |  |  | 2013 |  |  | 2012 |
Gain on sale of operating assets |  | $ | (1 | ) |  | $ | (65 | ) |  | $ | (27 | )
Frozen defined-benefit pension plan (income) expense |  |  | (1,611 | ) |  |  | (336 | ) |  |  | 320 |
Total other operating (income) expenses, net |  | $ | (1,612 | ) |  | $ | (401 | ) |  | $ | 293 |

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