Consolidated Statements of Cash Flows (Unaudited) (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash Flows From Operating Activities:
Net loss	$ (6,537,017)	$ (10,329,722)
Depreciation and amortization	198,792	188,574
Share-based compensation, net	591,055	768,634
Fair value of common stock and warrants issued for services	8,404	89,970
Gain on revaluation of derivative warrant liability	(533,000)	(4,675,986)
Gain on disposal of assets	(1,500)
Amortization of discount on note payable		2,879,166
Amortization of non-cash deferred financing costs	484,002	484,002
Prepaid expenses and other current assets	(159,278)	(134,695)
Other assets	576	(500)
Accounts payable	(3,960)	(54,643)
Deferred revenue from licensing arrangements	(38,214)	(45,114)
Accrued expenses and other liabilities	(526,906)	188,081
Net cash used in operating activities	(6,517,046)	(10,642,233)
Cash Flows from Investing Activities:
Purchase of furniture, equipment and leasehold improvements	(32,911)	(210,031)
Decrease (increase) in restricted cash	250,000	(250,000)
Proceeds on disposal of furniture, equipment and leasehold improvements	1,887
Net cash used in investing activities	218,976	(460,031)
Cash Flows From Financing Activities:
Proceeds from issuances of Common Stock, and warrants, net of expenses	2,350,000	21,964,575
Repayment of Montaur note payable		(3,000,000)
Principal payments on capital lease obligations	(1,361)	(1,232)
Net cash provided by financing activities	2,348,639	18,963,343
Net increase (decrease) in cash and cash equivalents	(3,949,431)	7,861,079
Cash and cash equivalents, beginning of period	8,055,385	3,747,210
Cash and cash equivalents, end of period	4,105,954	11,608,289
Supplemental Disclosure of Cash Flow Information and Non Cash Financing Transactions:
Cash paid for interest	$ 3,067	$ 113,535