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Note 8 - Inventory
12 Months Ended
Dec. 31, 2018
Notes to Financial Statements  
Inventory Disclosure [Text Block]
(
8
)
Inventory
 
Inventory consists of the following (in thousands):
 
   
December 31,
 
   
2018
   
2017
 
Raw materials
  $
12,354
    $
10,011
 
Work in process
   
6,331
     
7,150
 
Finished goods
   
1,313
     
1,645
 
Reserve for excess and obsolete inventory
   
(1,414
)    
(1,165
)
Total
  $
18,584
    $
17,641