Note 4 - Summary of Accrued and Other Current Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2015	Jun. 30, 2015
Professional fees	$ 0.7	$ 0.8
Salary and benefits	0.2	1.6
Research and development expenses	2.1	1.7
Other accrued expenses	0.1	1.2
Total accrued expenses and other liabilities	$ 3.1	$ 5.3