Balance Sheet Components (Other assets and Accrued liabilities) (Details) - USD ($) $ in Thousands |
Sep. 30, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Other assets | ||
| Deposits | $ 665 | $ 933 |
| Prepaid licensing | 552 | 664 |
| Deferred tax asset | 882 | |
| Other | 11 | 53 |
| Other assets total | 2,110 | 1,650 |
| Accrued liabilities | ||
| Sales returns and warranty accruals | 3,016 | 2,508 |
| Compensation accruals | 3,249 | 2,331 |
| Other accrued liabilities | 1,142 | 1,041 |
| Total accrued liabilities | $ 7,407 | $ 5,880 |