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Note 4 - Inventories - Inventories (Details) - USD ($)
$ in Thousands
Jun. 30, 2018
Jun. 30, 2017
Inventories:    
Raw materials $ 31,795 $ 32,421
Work-in-process 3,833 3,527
Finished goods 15,366 14,060
Total Inventories $ 50,994 $ 50,008