CONDENSED STATEMENTS OF CASH FLOWS (Unaudited) (USD $)	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities:
Net loss	$ (21,813,157)	$ (9,953,076)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	87,199	70,498
Retirement of fixed assets	6,257	6,557
Stock option and warrant expense	1,309,660	1,124,514
Fair value adjustment on warrant liability	5,980,016	(5,494,322)
Changes in assets and liabilities:
Receivable	92,805	221,249
Interest receivable	15,670	95,069
Prepaid expenses and other current assets	(169,486)	(1,344,763)
Income taxes recoverable	0	519,158
Accounts payable	506,038	1,809,299
Accrued expenses and other current liabilities	510,133	1,668,488
Net cash used in operating activities	(13,474,865)	(11,277,329)
Cash flows from investing activities:
Net proceeds from sale of marketable securities	8,057,672	9,510,189
Proceeds from sale of unconsolidated subsidiary shares	0	6,938,603
Purchases of equipment and furnishings	(124,960)	(51,429)
Net cash provided by investing activities	7,932,712	16,397,363
Cash flows from financing activities:
Net proceeds from exercise of stock options	7,200	0
Net proceeds from the issuance of common shares	0	18,943,119
Net cash provided by financing activities	7,200	18,943,119
Net increase (decrease) in cash	(5,534,953)	24,063,153
Cash at beginning of period	17,988,590	6,324,430
Cash at end of period	12,453,637	30,387,583
Supplemental disclosure of cash flow information:
Fixed assets purchased on credit	4,476	0
Cash paid during the period for income taxes	$ 47,334	$ 0