Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Revenues
Revenues	$ 30,356	$ 24,883
Cost of revenues	6,846	5,795
Gross profit	23,510	19,088
Operating expenses:
Research and development	6,404	5,297
Sales and marketing	12,492	10,168
General and administrative	4,875	3,896
Total operating expenses	23,771	19,361
Loss from operations	(261)	(273)
Other income (expense), net:
Interest expense	(4)	(18)
Interest income	108	77
Other income (expense), net	(101)	(319)
Total other income (expense), net	3	(260)
Loss before provision for income taxes	(258)	(533)
Provision for income taxes	182	70
Net loss	$ (440)	$ (603)
Net loss per share:
Basic (USD per share)	$ (0.01)	$ (0.02)
Diluted (USD per share)	$ (0.01)	$ (0.02)
Weighted average shares used in computing net loss per share:
Basic (shares)	32,516	31,494
Diluted (shares)	32,516	31,494