CONDENSED STATEMENTS OF CASH FLOWS (Unaudited) (USD $)	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities:
Net loss	$ (9,953,076)	$ (3,730,701)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	70,498	83,775
Retirement of fixed assets	6,557	61,086
Non-cash gain on transfer of RXi common stock	0	(8,887,614)
Stock option and warrant expense	1,124,514	1,427,728
Fair value adjustment on warrant liability	(5,494,322)	(1,593,076)
Gain on sale of fixed assets held for sale	0	(24,997)
Changes in assets and liabilities:
Receivable	221,249	85,827
Interest receivable	95,069	60,882
Prepaid expenses and other current assets	(1,344,763)	233,599
Income taxes recoverable	519,158	0
Accounts payable	1,809,299	348,940
Accrued expenses and other current liabilities	1,668,488	1,220,779
Net cash used in operating activities	(11,277,329)	(10,713,772)
Cash flows from investing activities:
Net proceeds from sale of marketable securities	9,510,189	2,182,139
Proceeds from sale of assets held for sale	0	73,634
Proceeds from sale of unconsolidated subsidiary shares	6,938,603	8,887,614
Purchases of equipment and furnishings	(51,429)	(311,205)
Net cash provided by investing activities	16,397,363	10,832,182
Cash flows from financing activities:
Net proceeds from issuance of common stock	18,943,119	0
Net proceeds from exercise of stock options	0	147,243
Net cash provided by financing activities	18,943,119	147,243
Net increase in cash and cash equivalents	24,063,153	265,653
Cash and cash equivalents at beginning of period	6,324,430	9,893,590
Cash and cash equivalents at end of period	30,387,583	10,159,243
Supplemental disclosure of cash flow information:
Cash received during the period as interest income	$ 257,220	$ 128,950