Quarterly Financial Data (Unaudited) (Details) (USD $)	3 Months Ended												12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 17,993,790	$ 16,115,708	$ 13,514,743	$ 11,556,493	$ 10,509,663	$ 7,954,046	$ 4,884,256	$ 3,705,808	$ 2,635,466	$ 2,152,094	$ 1,929,399	$ 1,043,487	$ 59,180,734	$ 27,053,773	$ 7,760,446
Gross margin	14,882,616	14,002,270	11,316,261	9,651,473	8,820,402	6,528,710	3,769,330	2,746,953	1,719,125	1,265,584	1,084,458	333,370	49,852,620	21,865,395	4,402,537
Net income (loss)	$ (1,426,938)	$ (307,118)	$ (757,389)	$ (1,620,408)	$ (1,605,283)	$ (4,219,372)	$ (744,069)	$ (1,093,652)	$ (2,577,196)	$ (1,765,723)	$ (2,503,505)	$ (3,347,562)	$ (4,111,853)	$ (7,662,376)	$ (10,193,986)
Net income (loss) per common share - basic and diluted (in dollars per share)	$ (0.01)	$ 0.00	$ (0.01)	$ (0.02)	$ (0.01)	$ (0.05)	$ (0.01)	$ (0.01)	$ (0.04)	$ (0.02)	$ (0.03)	$ (0.05)	$ (0.04)	$ (0.09)	$ (0.14)