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Accrued Liabilities | 6 Months Ended
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Jun. 30, 2018
Payables and Accruals [Abstract] |
Accrued Liabilities | Note 10. Accrued Liabilities Accrued liabilities consisted of the following for the periods indicated (in thousands):
|  | June 30, 2018 |  | December 31, 2017 |
Accrued payroll |  | $ | 9,503 |  | $ | 11,693 |
Accrued rent |  |  | 1,190 |  |  | 1,180 |
Accrued employee benefits |  |  | 2,020 |  |  | 2,035 |
Accrued state and local taxes |  |  | 454 |  |  | 951 |
Advance payments |  |  | 464 |  |  | 441 |
Accrued product warranty |  |  | 1,324 |  |  | 1,118 |
Accrued commission expenses |  |  | 295 |  |  | 425 |
Accrued professional fees |  |  | 201 |  |  | 181 |
Accrued other |  |  | 1,200 |  |  | 1,079 |
|  | $ | 16,651 |  | $ | 19,103 |

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