CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Operating activities:
Net loss	$ (4,644,411)	$ (12,722,640)
Adjustments to reconcile net loss to net cash flows from operating activities:
Depreciation and amortization	331,520	366,161
Accretion of debt discount	82,198
Derivative loss (gain)	4,825,458	(1,024,951)
Purchase of Arcion license		2,072,136
Stock-based compensation expense	1,146,566	584,166
Changes in assets and liabilities:
Accounts receivable	262,611	293,192
Prepaid expenses and other assets	(72,769)	(254,063)
Accounts payable and accrued expenses	(1,253,771)	(1,299,423)
Income tax payable		85,000
Deferred revenue	(66,206)	(1,621,977)
Net cash flows from operating activities	611,196	(13,522,399)
Investing activities:
Purchase of equipment	(841,522)
Net cash flows from investing activities	(841,522)
Financing activities:
Proceeds from sale of securities	62,036,873
Proceeds from exercise of stock options	2,559,724
Proceeds from exercise of common stock warrants	2,575,001
Payment of notes payable	(2,000,000)
Return of short swing profits	82,337
Net cash flows from financing activities	65,253,935
Net change in cash and cash equivalents	65,023,609	(13,522,399)
Cash and cash equivalents at beginning of period	23,175,809	63,189,307
Cash and cash equivalents at end of period	$ 88,199,418	$ 49,666,908