CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net revenue	$ 4,092,277	$ 5,403,537	$ 15,030,382	$ 13,220,188
Cost of revenue	2,740,147	2,768,894	7,981,835	7,895,870
Gross profit	1,352,130	2,634,643	7,048,547	5,324,318
Operating expenses:
Selling and marketing	1,197,717	1,195,988	3,961,712	4,145,115
General and administrative	2,500,108	2,455,403	6,744,542	6,671,893
Research and development	391,592	426,105	1,136,478	1,695,851
Total operating expenses	4,089,417	4,077,496	11,842,732	12,512,859
Operating loss	(2,737,287)	(1,442,853)	(4,794,185)	(7,188,541)
Other income (expense):
Interest expense	(25,763)	(20,497)	(65,949)	(66,556)
Interest income	1	3	46	24
Other	44,923	47,859	20,503	(14,666)
Net loss	(2,718,126)	(1,415,488)	(4,839,585)	(7,269,739)
Unrealized gain (loss) on foreign currency translation	(712)	968	(2,567)	(1,338)
Comprehensive loss	$ (2,718,838)	$ (1,414,520)	$ (4,842,152)	$ (7,271,077)
Net loss per share - basic and diluted (in dollars per share)	$ (0.08)	$ (0.05)	$ (0.15)	$ (0.29)
Weighted-average shares - basic and diluted (shares)	33,137,368	26,362,842	32,911,836	24,709,185