Note 4 - Inventories (Details) (USD $) In Millions, unless otherwise specified			3 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Sep. 30, 2014 Cost of Sales [Member]	Sep. 30, 2013 Cost of Sales [Member]
Note 4 - Inventories (Details) [Line Items]
LIFO Inventory Amount	$ 14.9	$ 14.1
Inventory Difference Using FIFO Basis	27.5	27.3
Inventory, LIFO Reserve, Effect on Income, Net			$ 0.1	$ (0.2)