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Note 2 - Inventories - Inventory (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Jun. 30, 2014
Raw materials $ 3,727us-gaap_InventoryRawMaterialsNetOfReserves $ 2,851us-gaap_InventoryRawMaterialsNetOfReserves
Work-in-process 1,259us-gaap_InventoryWorkInProcessNetOfReserves 1,216us-gaap_InventoryWorkInProcessNetOfReserves
Finished goods 1,764us-gaap_InventoryFinishedGoodsNetOfReserves 1,631us-gaap_InventoryFinishedGoodsNetOfReserves
Total 6,750us-gaap_InventoryNet 5,698us-gaap_InventoryNet
Fair Value, Inputs, Level 1 [Member]    
Total 6,750us-gaap_InventoryNet
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
 
Fair Value, Inputs, Level 2 [Member]    
Total   $ 5,698us-gaap_InventoryNet
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member