Note 5 - Inventories (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended			3 Months Ended
	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Jun. 30, 2012	Dec. 31, 2012 LIFO [Member]
LIFO Inventory Amount		$ 19.4		$ 19.7
Inventory Difference Using FIFO Basis		28.5		27.5
Increase in Cost of Sales Using LIFO Compared to FIFO		1.0			1.0
Decrease in Cost of Sales Using LIFO Compared to FIFO	$ 0.7		$ 0.1