Note 7 - Summary of Accrued and Other Current Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2016	Jun. 30, 2015
Professional fees	$ 0.1	$ 0.8
Salary and related costs	0.6	1.6
Research and development services	2.2	1.7
Other accrued expenses	0.7	1.3
Total accrued expenses and other liabilities	$ 3.6	$ 5.4