Note 4 - Inventories (Details Textual) - USD ($) $ in Millions	6 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Jun. 30, 2015
Cost of Sales [Member]
Inventory, LIFO Reserve, Effect on Income, Net	$ 0.4	$ (0.1)
LIFO Inventory Amount	12.5		$ 14.6
Inventory Difference Using FIFO Basis	$ 28.5		$ 28.0