Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash Flows From Operating Activities:
Net loss	$ (6,988,325)	$ (2,985,770)
Depreciation and amortization	90,486	20,409
Share-based compensation, net	362,956	200,064
Fair value of common stock and warrants issued for services	92,745	22,800
Gain on revaluation of derivative warrant liability	(1,680,986)	(231,543)
Amortization of discount on note payable	2,879,166
Amortization of non-cash deferred financing costs	242,001
Accounts receivable		37,065
Prepaid expenses and other current assets	(155,545)	(43,416)
Deposits and other assets		9,749
Accounts payable	(819,925)	271,360
Deferred revenue from licensing arrangements	(22,557)	(30,927)
Accrued expenses and other liabilities	178,089	(289,118)
Net cash used in operating activities	(5,821,895)	(3,019,327)
Cash Flows from Investing Activities:
Purchase of furniture, equipment and leasehold improvements	(130,555)	(73,227)
Increase in restricted cash	(250,000)
Net cash used in investing activities	(380,555)	(73,227)
Cash Flows From Financing Activities:
Repayment of Platinum note payable	(3,000,000)
Proceeds from issuance of common stock and warrants, net of expenses	10,626,099	6,667
Principal payments for capital lease obligations	(608)	(551)
Proceeds from exercise of stock options		1,080
Net cash provided by financing activities	7,625,491	7,196
Net increase (decrease) in cash and cash equivalents	1,423,041	(3,085,358)
Cash and cash equivalents, beginning of period	3,747,210	8,995,571
Cash and cash equivalents, end of period	5,170,251	5,910,213
Supplemental Disclosure of Cash Flow Information and Non Cash Financing Transactions:
Cash paid for interest	113,458	150
Reduction in fair value of common stock issued in connection with settlement agreement		$ (82,000)