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Note 5 - Inventories - Inventories (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Jun. 30, 2017
Inventories:    
Raw materials $ 30,987 $ 32,421
Work-in-process 3,417 3,527
Finished goods 17,283 14,060
Total Inventories $ 51,687 $ 50,008