Consolidated Statements of Changes in Shareholders' Deficiency (Unaudited) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014 Common Stock	Sep. 30, 2014 Additional Paid-In Capital	Sep. 30, 2014 Accumulated Deficit
Balance	$ (1,769,821)	$ 19,626	$ 130,549,930	$ (132,339,377)
Balance, Shares		19,626,439
Issuance of common stock pursuant to Lincoln Park equity line	470,475	231	470,244
Issuance of common stock pursuant to Lincoln Park equity line, Shares		230,743
Issuance of common stock to vendors	256,040	121	255,919
Issuance of common stock to vendors, Shares		121,000
Issuance of shares from exercise of stock options	28,079	37	28,042
Issuance of shares from exercise of stock options, Shares		36,672
Reclassification of warrant liability upon partial exercise of warrants issued in unit offering	1,055,490		1,055,490
Fair value of common stock warrants issued to vendors	4,775		4,775
Issuance of common stock to collaboration partner	100,002	43	99,959
Issuance of common stock to collaboration partner, Shares		43,067
Shares issued in connection with asset purchase agreement	3,750,000	1,849	3,748,151
Shares issued in connection with asset purchase agreement, Shares		1,849,113
Issuance of common stock from cashless exercise of warrants		143	(143)
Issuance of common stock from cashless exercise of warrants, Shares		143,004
Stock-based compensation expense	458,914		458,914
Net loss	(8,629,780)			(8,629,780)
Balance	$ (4,275,826)	$ 22,050	$ 136,671,281	$ (140,969,157)
Balance, Shares		22,050,038