Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues:
Licenses	$ 92,873	$ 71,273	$ 58,420
Maintenance and services	71,583	55,937	42,928
Total revenues	164,456	127,210	101,348
Cost of revenues	15,843	12,019	9,911
Gross profit	148,613	115,191	91,437
Operating costs and expenses:
Research and development	36,660	31,792	28,086
Sales and marketing	107,825	86,367	68,787
General and administrative	19,822	16,106	11,872
Total operating expenses	164,307	134,265	108,745
Operating loss	(15,694)	(19,074)	(17,308)
Financial expenses, net	(885)	(1,523)	(1,714)
Loss before income taxes	(16,579)	(20,597)	(19,022)
Income taxes	(1,131)	(686)	(376)
Net loss	$ (17,710)	$ (21,283)	$ (19,398)
Net loss per share of common stock, basic and diluted (in dollars per share)	$ (0.67)	$ (0.84)	$ (0.91)
Weighted average number of shares used in computing net loss per share of common stock, basic and diluted (in shares)	26,406,312	25,198,546	21,242,313