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Note 5 - Inventories
6 Months Ended
Jun. 30, 2017
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):
 
    June 30,
2017
  December 31,
2016
Raw materials   $
6,737
    $
7,111
 
Work in process    
1,323
     
1,354
 
Finished goods    
6,035
     
5,686
 
Total inventory   $
14,095
    $
14,151