Note 4 - Inventory
 3 Months Ended
Mar. 31, 2020
Notes to Financial Statements  
Inventory Disclosure [Text Block]
4
. Inventory
 
 
Inventory consists of the following at
March 31, 2020
and
December 
31,
2019:
 
(In thousands)
  
March 31, 20
20
    
December 31, 201
9
  
Raw materials
   $
3,282
     $
2,979
  
Work in progress
    
1,658
      
1,896
  
Finished goods
    
5,889
      
6,097
  
Total
   $
10,829
     $
10,972