Note 4 - Inventories (Details) (USD $)	3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Jun. 30, 2013
Inventory Disclosure [Abstract]
LIFO Inventory Amount	$ 12,900,000		$ 12,900,000
Inventory Difference Using FIFO Basis	30,600,000		30,800,000
Effect of LIFO Inventory Liquidation on Income	$ 200,000	$ 0