Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenue:
Product	$ 72,748	$ 34,795	$ 140,278	$ 89,810
Services	5,689	6,355	11,442	12,180
Total revenue	78,437	41,150	151,720	101,990
Cost of revenue:
Product	46,560	21,021	91,745	54,823
Services	4,703	5,645	9,421	10,943
Total cost of revenue	51,263	26,666	101,166	65,766
Gross profit	27,174	14,484	50,554	36,224
Operating expenses:
Research and development	7,899	8,845	16,098	18,102
Sales and marketing	5,858	5,037	11,486	10,513
General and administrative	6,231	6,494	12,332	12,975
Restructuring charges	8	160	18	360
Total operating expenses	19,996	20,536	39,934	41,950
Income (loss) from operations	7,178	(6,052)	10,620	(5,726)
Other (expense) income:
Interest income	6	2	9	4
Interest expense	(1,310)	(257)	(2,353)	(508)
Other, net	49	(362)	(384)	(70)
Total other expense	(1,255)	(617)	(2,728)	(574)
Income (loss) before income taxes	5,923	(6,669)	7,892	(6,300)
Income taxes	40	231	141	426
Net income (loss)	$ 5,883	$ (6,900)	$ 7,751	$ (6,726)
Net income (loss) per share
Basic (in dollars per share)	$ 0.05	$ (0.06)	$ 0.07	$ (0.06)
Diluted (in dollars per share)	$ 0.05	$ (0.06)	$ 0.06	$ (0.06)
Shares used in computing net income (loss) per share:
Basic weighted average common shares	113,784	111,212	113,470	110,932
Diluted weighted average common shares	120,612	111,212	119,900	110,932