Note 6 - Inventories (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cost of Sales [Member]
Inventory, LIFO Reserve, Effect on Income, Net	$ 0.7	$ (3.5)
LIFO Inventory Amount	14.6	14.1
Inventory Difference Using FIFO Basis	$ 28.0	$ 27.3