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Note 5 - Inventories (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2015
Mar. 31, 2014
Inventory Disclosure [Abstract]        
Selling Expense $ 5.4us-gaap_SellingExpense $ 4.4us-gaap_SellingExpense $ 17.9us-gaap_SellingExpense $ 15.0us-gaap_SellingExpense