Note 4 - Summary of Accrued and Other Current Liabilities (Details) - USD ($)	Dec. 31, 2015	Jun. 30, 2015
Professional fees	$ 700,000	$ 800,000
Salary and benefits	300,000	1,600,000
Research and development expenses	3,300,000	1,700,000
Other accrued expenses	0	1,300,000
Total accrued expenses and other liabilities	$ 4,300,000	$ 5,400,000