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Depreciation and Amortization (Tables) | 3 Months Ended
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Mar. 31, 2015
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Depreciation and Amortization Expense for Property and Equipment and Intangible Assets | Depreciation and amortization expense for property and equipment and intangible assets for the three months ended March 31, 2015 and 2014 was as follows (in thousands):
|  | Three Months Ended March 31, |
|  | 2015 |  |  | 2014 |
Operating expenses |  | $ | 4,891 |  |  | $ | 4,584 |
Corporate general and administrative expenses |  |  | 96 |  |  |  | 116 |
Total depreciation and amortization expense |  | $ | 4,987 |  |  | $ | 4,700 |

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- Definition Tabular disclosure of depreciation and amortization expense for property and equipment and intangible assets. + References No definition available. + Details
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