STATEMENTS OF CASH FLOWS (Unaudited) (USD $)	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities:
Net loss	$ (10,708,308)	$ (8,775,556)
Non-cash items included in net loss:
Depreciation and amortization	82,740	82,747
Change in fair value of common stock warrant liability	417,860	(258,925)
Stock based compensation	559,976	775,619
Shares issued from treasury stock	28,769	0
Non cash deferred expense on preferred stock	81,955	0
Amortization of patent license fee	3,750	3,750
Shares issued in exchange for services	0	156,060
Net changes in:
Refundable income taxes	0	806,255
Prepaid expenses and other assets	(207,339)	419,141
Accounts payable	(1,221,033)	(25,785)
Other accrued liabilities	(436,180)	5,662
Net cash used in operating activities:	(11,397,810)	(6,811,032)
Cash flows from investing activities:
Purchases of investment securities	0	(11,491,561)
Proceeds from sale and maturity of investment securities	301,632	14,177,455
Purchases of property and equipment	(183,490)	(800)
Net cash provided by investing activities	118,142	2,685,094
Cash flows from financing activities:
Proceeds from sale of 8% Series A redeemable, convertible preferred stock, net of issuance costs	4,324,080	0
Proceeds from sale of common stock equity	11,256,456	0
Principal payments on note payable	(59,716)	(52,397)
Net cash provided by (used in) financing activities	15,520,820	(52,397)
Increase (decrease) in cash and cash equivalents	4,241,152	(4,178,335)
Cash and cash equivalents at beginning of period	1,138,916	6,923,476
Cash and cash equivalents at end of period	5,380,068	2,745,141
Interest and dividends paid	$ 481,087	$ 17,528