Note 5 - Balance Sheet Details (Tables)

9 Months Ended

Sep. 30, 2018

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	September 30, 2018		December 31, 2017
Raw materials	$	18,177	$	19,160
Work in progress		2,079		2,744
Finished goods		11,066		6,878
Total	$	31,322	$	28,782

Schedule of Accrued Liabilities [Table Text Block]

	September 30, 2018		December 31, 2017
Accrued payroll and related expenses	$	11,098	$	12,567
Sales and marketing programs		2,138		3,710
Warranty liability		3,640		3,508
Sales tax		2,728		2,920
Other		3,300		4,143
Total	$	22,904	$	26,848