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Note 5 - Inventories (Tables)
3 Months Ended
Mar. 31, 2020
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
    March 31,   December 31,
    2020   2019
Raw materials   $
10,846
    $
12,058
 
Work-in-process    
13,997
     
8,330
 
Finished goods    
37,310
     
8,777
 
Total   $
62,153
    $
29,165
 
                 
Inventories   $
35,081
    $
21,995
 
Other long-term assets    
27,072
     
7,170