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Note 5 - Inventories
9 Months Ended
Sep. 30, 2016
Notes to Financial Statements  
Inventory Disclosure [Text Block]
(5)
Inventories
 
Inventories are stated at the lower of cost (first-in, first-out) or net realizable value, and consist of the following at the stated dates (in thousands):
 
    September 30,
2016
  December 31,
2015
Raw materials   $ 7,443     $ 7,506  
Work in process     1,367       1,192  
Finished goods     5,758       5,504  
Total inventory   $ 14,568     $ 14,202