Condensed Consolidated Statements of Income (Unaudited) - 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	$ 174,072	$ 126,390	$ 334,213	$ 232,883
Service	21,480	11,557	40,384	22,271
Total revenue	195,552	137,947	374,597	255,154
Cost of revenue:
Product	60,014	40,032	114,453	73,059
Service	7,648	4,535	14,500	7,401
Total cost of revenue	67,662	44,567	128,953	80,460
Total gross profit	127,890	93,380	245,644	174,694
Operating expenses:
Research and development	49,947	34,888	93,287	68,334
Sales and marketing	26,681	20,711	51,268	39,366
General and administrative	18,403	7,126	32,475	14,357
Total operating expenses	95,031	62,725	177,030	122,057
Income from operations	32,859	30,655	68,614	52,637
Other income (expense), net:
Interest expense—related party	0	(350)	0	(782)
Interest expense	(832)	(1,854)	(1,653)	(3,965)
Other income (expense), net	417	3,241	(51)	3,249
Total other income (expense), net	(415)	1,037	(1,704)	(1,498)
Income before provision for income taxes	32,444	31,692	66,910	51,139
Provision for income taxes	8,448	10,074	18,422	17,192
Net income	23,996	21,618	48,488	33,947
Net income attributable to common stockholders:
Basic (usd per share)	23,607	14,212	47,594	19,985
Diluted (usd per share)	$ 23,638	$ 14,851	$ 47,667	$ 21,121
Net income per share attributable to common stockholders:
Basic (usd per share)	$ 0.36	$ 0.37	$ 0.73	$ 0.59
Diluted (usd per share)	$ 0.33	$ 0.34	$ 0.67	$ 0.54
Weighted-average shares used in computing net income per share attributable to common stockholders:
Basic (in shares)	65,524	38,491	65,018	33,834
Diluted (in shares)	71,215	44,057	70,919	38,962