Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 30, 2016	Apr. 30, 2015
Revenue:
Product	$ 111,738	$ 63,618
Support	28,209	10,459
Total revenue	139,947	74,077
Cost of revenue:
Product	34,042	22,712
Support	12,893	6,924
Total cost of revenue	46,935	29,636
Gross profit	93,012	44,441
Operating expenses:
Research and development	52,500	31,682
Sales and marketing	82,816	48,327
General and administrative	21,482	12,692
Total operating expenses	156,798	92,701
Loss from operations	(63,786)	(48,260)
Other income (expense), net	1,282	(703)
Loss before provision for income taxes	(62,504)	(48,963)
Provision for income taxes	955	157
Net loss	$ (63,459)	$ (49,120)
Net loss per share attributable to common stockholders, basic and diluted	$ (0.34)	$ (1.51)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic and diluted	189,283	32,605