Note 4 - Inventories (Detail) (USD $) In Millions, unless otherwise specified			3 Months Ended
	Sep. 30, 2012	Jun. 30, 2012	Sep. 30, 2011 LIFO [Member]
LIFO Inventory Amount	$ 19.9	$ 19.7
Inventory Difference Using FIFO Basis	27.5	27.5
Increase in Cost of Sales Using LIFO Compared to FIFO			$ 0.6