Note 8 - Property, Plant and Equipment (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Capital Leased Assets, Gross	$ 0	$ 0
Operating Leases, Rent Expense, Net	$ 2,300	$ 2,300	$ 2,200