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Accrued Liabilities (Tables) | 9 Months Ended
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Sep. 30, 2015
Accrued Liabilities [Abstract] |
Components of accrued liabilities | The components of accrued liabilities are summarized below (in thousands):
|  | September 30, |  | December 31, |
|  | 2015 |  | 2014 |
Accrued compensation and related charges |  | $ | 1,323 |  | $ | 2,656 |
Current portion of royalty payments |  |  | 631 |  |  | 800 |
Accrued product warranty |  |  | 620 |  |  | 802 |
Accrued professional services |  |  | 592 |  |  | 509 |
Dividends payable by consolidated joint ventures |  |  | 544 |  |  | 563 |
Accrued income taxes |  |  | 165 |  |  | 119 |
Other accrued liabilities |  |  | 1,638 |  |  | 2,185 |
|  | $ | 5,513 |  | $ | 7,634 |

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