Accrued Liabilities Accrued Liabilities (Details) - USD ($) $ in Thousands |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Other Commitments [Line Items] | ||
| Accrued liabilities | $ 2,243 | $ 2,694 |
| Accrued salaries and other compensation | ||
| Other Commitments [Line Items] | ||
| Accrued liabilities | 1,170 | 340 |
| Dividends payable | ||
| Other Commitments [Line Items] | ||
| Accrued liabilities | 0 | 914 |
| Sales and marketing programs | ||
| Other Commitments [Line Items] | ||
| Accrued liabilities | 477 | 642 |
| Product warranty | ||
| Other Commitments [Line Items] | ||
| Accrued liabilities | 288 | 331 |
| Other accrued liabilities | ||
| Other Commitments [Line Items] | ||
| Accrued liabilities | $ 308 | $ 467 |