Note 7. Stockholders' Equity (Detail) - Stock-based Compensation Charges in Operating Expenses (USD $)	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
No Service Conditions [Member] | General and Administrative [Member]
Fair value of stock options expensed	$ 2,485,782	$ 1,830,512
Stock Bonuses [Member] | General and Administrative [Member]
Fair value of share based compensation expense	1,035,300	684,867
Employee Stock Issue [Member] | General and Administrative [Member]
Fair value of share based compensation expense	99,996
General and Administrative [Member]
Fair value of share based compensation expense	3,715,898	3,470,082
Change in fair value from modification of option terms	94,820	954,703
Research and Development [Member]
Fair value of share based compensation expense	50,251	468,317
Change in fair value from modification of option terms		200,200
Fair value of stock options expensed	$ 50,251	$ 268,117