Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net revenue:
Products and license	$ 19,642	$ 18,178	$ 48,199	$ 48,003
Services	23,033	16,924	64,434	47,023
Total net revenue	42,675	35,102	112,633	95,026
Cost of revenue:
Products and license	2,299	1,894	6,106	6,216
Services	7,202	5,396	20,181	14,909
Total cost of revenue	9,501	7,290	26,287	21,125
Gross profit	33,174	27,812	86,346	73,901
Operating expenses:
Research and development	10,459	6,725	32,038	19,729
Sales and marketing	26,853	20,135	74,953	55,963
General and administrative	8,987	4,697	25,013	13,677
Amortization of acquired intangible assets	351		917	0
Total operating expenses	46,650	31,557	132,921	89,369
Loss from operations	(13,476)	(3,745)	(46,575)	(15,468)
Other income (expense), net	48	113	(321)	11
Loss before provision (benefit) for income taxes	(13,428)	(3,632)	(46,896)	(15,457)
Provision (benefit) for income taxes	190	288	(216)	703
Net loss	(13,618)	(3,920)	(46,680)	(16,160)
Loss attributable to noncontrolling interest	0	145	213	411
Net loss attributable to Imperva, Inc. stockholders	$ (13,618)	$ (3,775)	$ (46,467)	$ (15,749)
Net loss per share of common stock attributable to Imperva, Inc. stockholders, basic and diluted	$ (0.52)	$ (0.15)	$ (1.81)	$ (0.65)
Shares used in computing net loss per share of common stock, basic and diluted	25,967	24,453	25,680	24,174