Balance Sheet Components (Other) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Other assets
Deposits	$ 933	$ 697
Prepaid licensing	664	632
Other	53
Other assets total	1,650	1,329
Accrued liabilities
Sales returns and warranty accruals	2,508	2,019
Compensation accruals	2,331	1,614
Other accrued liabilities	1,041	1,117
Total accrued liabilities	$ 5,880	$ 4,750