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Note 10 - Inventory - Inventory (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Raw materials $ 9,560 $ 9,767
Work in process 792 1,998
Total inventory 10,352 11,765
Allowance for obsolescence (265) (494)
Inventory, net of allowance $ 10,087 $ 11,271