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Depreciation and Amortization (Tables) | 6 Months Ended
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Jun. 30, 2014
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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 and six months ended June 30, 2014 and 2013 was as follows (in thousands):
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2014 |  |  | 2013 |  |  | 2014 |  |  | 2013 |
Operating expenses |  | $ | 4,847 |  |  | $ | 4,674 |  |  | $ | 9,579 |  |  | $ | 9,225 |
Corporate general and administrative expenses |  |  | 117 |  |  |  | 75 |  |  |  | 233 |  |  |  | 149 |
Total depreciation and amortization expense |  | $ | 4,964 |  |  | $ | 4,749 |  |  | $ | 9,812 |  |  | $ | 9,374 |

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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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