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Note 3 - Inventories - Inventories, Current (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Raw materials and purchased parts for assembly | $ 12,007 | $ 5,429
Self-manufactured assembly parts and finished products | 7,544 | 6,571
Total | $ 19,551 | $ 12,000

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