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Note 5 - Inventories
12 Months Ended
Dec. 31, 2018
Notes to Financial Statements  
Inventory Disclosure [Text Block]
(
5
)
Inventories
 
Inventories consist of the following (in thousands):
 
    December 31,
    2018   2017
Raw materials   $
11,727
    $
6,898
 
Work in process    
2,521
     
1,207
 
Finished goods    
5,328
     
4,758
 
Total Inventory   $
19,576
    $
12,863