CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenue
Perpetual license	$ 9,882	$ 10,368
Subscription	16,907	14,623
Software support and services	15,499	13,016
Total revenue	42,288	38,007
Cost of revenue
Perpetual license	399	859
Subscription	1,893	1,783
Software support and services	4,978	4,628
Total cost of revenue	7,270	7,270
Gross profit	35,018	30,737
Operating expenses:
Research and development	17,193	16,927
Sales and marketing	23,302	25,668
General and administrative	6,188	7,548
Litigation settlement charge	1,143
Total operating expenses	47,826	50,143
Operating loss	(12,808)	(19,406)
Other income (expense) - net	(174)	(135)
Loss before income taxes	(12,634)	(19,271)
Income tax expense	199	176
Net loss	$ (12,833)	$ (19,447)
Net loss per share, basic and diluted	$ (0.14)	$ (0.23)
Weighted-average shares used to compute net loss per share, basic and diluted	90,439	82,977