CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net loss	$ (1,179,465)	$ (4,226,515)	$ (3,998,558)	$ (10,538,593)
Unrealized (loss) gain on marketable securities	(112,398)	164,667	(35,973)	265,447
Comprehensive loss	$ (1,291,863)	$ (4,061,848)	$ (4,034,531)	$ (10,273,146)