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Accrued Liabilities (Tables) | 6 Months Ended
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Jun. 30, 2015
Payables and Accruals [Abstract] |
Schedule of Accrued Liabilities | Accrued liabilities consisted of the following (in thousands):
| June 30, 2015 |  | December 31, 2014
Commissions | $ | 861 |  |  | $ | 846 |
Payroll and related expenses | 704 |  |  | 1,001 |
Royalties | 509 |  |  | 531 |
Interest payable | 457 |  |  | 333 |
Final loan payment fees | 478 |  |  | 233 |
Deferred rent | 63 |  |  | 57 |
Other | 121 |  |  | 145 |
Total accrued liabilities | $ | 3,193 |  |  | $ | 3,146 |

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