CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net revenue	$ 4,281,235	$ 5,313,914	$ 8,176,169	$ 10,938,105
Cost of revenue	2,585,738	2,707,966	5,024,114	5,241,688
Gross profit	1,695,497	2,605,948	3,152,055	5,696,417
Operating expenses:
Selling and marketing	1,283,080	1,321,760	2,735,984	2,763,995
General and administrative	3,046,599	2,109,268	6,060,556	4,244,433
Research and development	473,324	447,686	940,890	744,886
Total operating expenses	4,803,003	3,878,714	9,737,430	7,753,314
Operating loss	(3,107,506)	(1,272,766)	(6,585,375)	(2,056,897)
Other income (expense):
Interest expense	(23,151)	(20,756)	(47,372)	(40,186)
Interest income	2	2	3	45
Other	(8,260)	(3,634)	(10,667)	(24,420)
Net loss	(3,138,915)	(1,297,154)	(6,643,411)	(2,121,458)
Unrealized loss on foreign currency translation	(661)	(2)	(22,890)	(1,855)
Comprehensive loss	$ (3,139,576)	$ (1,297,156)	$ (6,666,301)	$ (2,123,313)
Net loss per share — basic and diluted (in dollars per share)	$ (0.08)	$ (0.04)	$ (0.17)	$ (0.06)
Weighted-average shares — basic and diluted (in shares)	38,732,793	32,798,010	38,726,196	32,797,819