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Note 8 - Inventories - Summary of Inventories (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Raw materials $ 12,686 $ 13,688
Work-in-process 7,762 4,626
Finished goods 10,234 6,819
Total 30,682 25,133
Inventories, net 25,243 21,300
Inventory, Noncurrent, Total $ 5,439 $ 3,833