Note 5 - Balance Sheet Details (Tables)

6 Months Ended

Jun. 30, 2018

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	June 30, 2018		December 31, 2017
Raw materials	$	17,875	$	19,160
Work in progress		2,846		2,744
Finished goods		9,417		6,878
Total	$	30,138	$	28,782

Schedule of Accrued Liabilities [Table Text Block]

	June 30, 2018		December 31, 2017
Accrued payroll and related expenses	$	10,712	$	12,567
Sales and marketing accruals		2,283		3,710
Warranty liability		3,561		3,508
Sales tax		2,388		2,920
Other		3,812		4,143
Total	$	22,756	$	26,848