CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net revenue	$ 4,464,991	$ 4,092,277	$ 12,641,160	$ 15,030,382
Cost of revenue	2,542,718	2,740,147	7,566,832	7,981,835
Gross profit	1,922,273	1,352,130	5,074,328	7,048,547
Operating expenses:
Selling and marketing	1,303,940	1,197,717	4,039,924	3,961,712
General and administrative	3,495,515	2,500,108	9,556,013	6,744,542
Research and development	477,303	391,592	1,418,194	1,136,478
Total operating expenses	5,276,758	4,089,417	15,014,131	11,842,732
Operating loss	(3,354,485)	(2,737,287)	(9,939,803)	(4,794,185)
Other income (expense):
Interest expense	(259,105)	(25,763)	(306,477)	(65,949)
Interest income	1	1	4	46
Other	(30,357)	44,923	(41,024)	20,503
Net loss	(3,643,946)	(2,718,126)	(10,287,300)	(4,839,585)
Unrealized gain (loss) on foreign currency translation	1,347	(712)	(21,543)	(2,567)
Comprehensive loss	$ (3,642,599)	$ (2,718,838)	$ (10,308,843)	$ (4,842,152)
Net loss per share — basic and diluted (in dollars per share)	$ (0.09)	$ (0.08)	$ (0.27)	$ (0.15)
Weighted-average shares — basic and diluted (in shares)	38,732,896	33,137,368	38,728,454	32,911,836