Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Income Statement [Abstract]
Revenues	$ 16,834		$ 12,834
Cost of revenues	10,212	[1]	7,807	[1]
Gross profit	6,622		5,027
Operating expenses:
Sales and marketing	5,509	[1]	3,060	[1]
Research and development	2,736	[1]	1,866	[1]
General and administrative	3,718	[1]	2,335	[1]
Total operating expenses	11,963		7,261
Loss from operations	(5,341)		(2,234)
Other income (expense):
Interest income	0		3
Interest and other expense	(207)		(54)
Total other expense, net	(207)		(51)
Loss before income taxes	(5,548)		(2,285)
Provision for income taxes	(18)		(5)
Loss from continuing operations	(5,566)		(2,290)
Loss from discontinued operations, net of tax	0		(199)
Net loss	$ (5,566)		$ (2,489)
Net loss per common share:
Loss from continuing operations per share, basic and diluted	$ (0.39)		$ (0.20)
Loss from discontinued operations per share, basic and diluted	$ 0.00		$ (0.02)
Net loss per common share, basic and diluted	$ (0.39)		$ (0.22)
Weighted average common shares outstanding:
Weighted-average common shares outstanding, basic and diluted	14,107		11,429

[1] Includes stock-based compensation as follows for the 3 months ended March 31, 2014 and 2013, respectively, Cost of Revenues of $126 and $61; Sales and Marketing of $167 and $39; Research and development of $107 and $59; General and administrative of $518 and $175; Total stock-based compensation of $918 and $334.