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Accrued Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2014
Payables and Accruals [Abstract] |
Schedule of Accrued Liabilities | Accrued liabilities consist of the following:
| December 31, 2014 |  | December 31, 2013
| (In thousands)
Rebates and lease buyouts | $ | 6,512 |  |  | $ | 1,699 |
Advance payments from customers | 4,834 |  |  | 4,971 |
Group purchasing organization fees | 3,475 |  |  | 2,324 |
Technology license purchase obligation | — |  |  | 1,500 |
Taxes payable | 2,181 |  |  | 1,664 |
Other accrued liabilities | 2,297 |  |  | 1,588 |
Total accrued liabilities | $ | 19,299 |  |  | $ | 13,746 |

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