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Revenue | 6 Months Ended
--- | ---
Jun. 30, 2015
Revenue [Abstract] |
Revenue | Revenue The Company differentiates revenue and cost of revenue based on whether the source of revenue is attributable to products, rentals or services. Revenue and cost of revenue by source are as follows (in thousands):
| Three months ended June 30, |  | Six months ended June 30,
| 2015 |  | 2014 |  | 2015 |  | 2014
Revenue: |  |  |  |  |  |  |
Products | $ | 74,522 |  |  | $ | 82,302 |  |  | $ | 140,682 |  |  | $ | 164,707 |
Rentals | 8,747 |  |  | 15,065 |  |  | 20,571 |  |  | 28,989 |
Services | 3,761 |  |  | 7,951 |  |  | 8,151 |  |  | 14,197 |
| $ | 87,030 |  |  | $ | 105,318 |  |  | $ | 169,404 |  |  | $ | 207,893 |
Cost of revenue: |  |  |  |  |  |  |
Products | $ | 50,189 |  |  | $ | 49,995 |  |  | $ | 95,850 |  |  | $ | 97,731 |
Rentals | 3,687 |  |  | 7,654 |  |  | 9,943 |  |  | 14,165 |
Services | 2,089 |  |  | 3,265 |  |  | 4,124 |  |  | 5,978 |
Depreciation | 1,813 |  |  | 2,094 |  |  | 3,708 |  |  | 4,029 |
| $ | 57,778 |  |  | $ | 63,008 |  |  | $ | 113,625 |  |  | $ | 121,903 |

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- Definition Revenue. + References No definition available. + Details
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- Definition Revenues and Cost of Revenues by Product Rental or Service Source + References No definition available. + Details
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