Consolidated Statements of Operations (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Income Statement [Abstract]
Revenues	$ 6,555	$ 11,492	$ 10,361	$ 38,709
Research and development	2,445,770	2,693,067	4,789,083	4,977,450
General and administrative	1,001,538	1,019,747	2,062,554	2,129,129
Total operating expenses	3,447,308	3,712,814	6,851,637	7,106,579
Loss from operations	(3,440,753)	(3,701,322)	(6,841,276)	(7,067,870)
Investment income	13,016	7,234	27,387	22,274
Interest expense	(1,360)	(1,847)	(3,642)	(4,820)
Increase in fair value of warrants			(7,069,165)
Gain on disposition of supplies and equipment		3,000	4,620	3,000
Total other income (expense), net	11,656	8,387	(7,040,800)	20,454
Loss before income taxes	(3,429,097)	(3,692,935)	(13,882,076)	(7,047,416)
Income tax benefit	1,753,208	1,068,233	1,753,208	1,068,233
NET LOSS	$ (1,675,889)	$ (2,624,702)	$ (12,128,868)	$ (5,979,183)
Basic and diluted net loss per common share	$ (0.02)	$ (0.08)	$ (0.14)	$ (0.17)
Weighted average number of common shares outstanding used in computing basic and diluted net loss per common share	106,424,443	34,900,591	89,046,806	34,900,591