Condensed Consolidated Statements of Shareholders' Equity (USD $)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2011	$ 7,142	$ 70,589,438	$ (62,295,742)	$ 8,300,838
Balance (in Shares) at Dec. 31, 2011	7,142,307
Stock compensation expense		2,482,911		2,482,911
Exercise of warrants	157	87,350		87,507
Exercise of warrants (in Shares)	157,709
Exercise of stock options	2	12,501		12,503
Exercise of stock options (in Shares)	1,667
Issuance of restricted stock	32	228,128		228,160
Issuance of restricted stock (in Shares)	32,000
Issuance of common stock, net of issuance costs	2,521	12,269,474		12,271,995
Issuance of common stock, net of issuance costs (in Shares)	2,520,585
Net loss			(9,017,808)	(9,017,808)
Balance at Dec. 31, 2012	9,854	85,669,802	(71,313,550)	14,366,106
Balance (in Shares) at Dec. 31, 2012	9,854,268
Stock compensation expense		1,461,804		1,461,804
Exercise of warrants	427	151,555		151,982
Exercise of warrants (in Shares)	427,251
Exercise of stock options	382	2,501,749		2,502,131
Exercise of stock options (in Shares)	381,718			381,718
Issuance of restricted stock		763,966		763,966
Issuance of common stock, net of issuance costs	1,374	41,218,519		41,219,893
Issuance of common stock, net of issuance costs (in Shares)	1,374,250			1,374,250
Net loss			(3,747,820)	(3,747,820)
Balance at Jun. 30, 2013	$ 12,037	$ 131,767,395	$ (75,061,370)	$ 56,718,062
Balance (in Shares) at Jun. 30, 2013	12,037,487