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		631,414		631,414
Exercise of warrants	159	115,823		115,982
Exercise of warrants (in Shares)	159,400			21,622
Exercise of stock options	372	2,430,867		2,431,239
Exercise of stock options (in Shares)	371,718			371,718
Issuance of restricted stock		221,893		221,893
Issuance of restricted stock (in Shares)				3
Net loss			947,415	947,415
Balance at Mar. 31, 2013	$ 10,385	$ 89,069,799	$ (70,366,135)	$ 18,714,049
Balance (in Shares) at Mar. 31, 2013	10,385,386