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Note 5 - Inventories (Details Textual) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2016
Mar. 31, 2015
Selling Expense $ 4.6 $ 5.4 $ 15.2 $ 17.9