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Depreciation and Amortization | 3 Months Ended
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Mar. 31, 2013
Depreciation and Amortization [Abstract] |
Depreciation and Amortization |
4. |  | Depreciation and Amortization
Depreciation and amortization expense for property and equipment and intangible assets for the three months ended March 31, 2013 and 2012 was as follows (in thousands):
|  | Three Months Ended March 31, |
|  | 2013 |  |  | 2012 |
Operating expenses |  | $ | 5,745 |  |  | $ | 5,147 |
Corporate general and administrative expenses |  |  | 75 |  |  |  | 81 |
Total depreciation and amortization expense |  | $ | 5,820 |  |  | $ | 5,228 |

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- Definition Depreciation and amortization. + References No definition available. + Details
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- Details
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