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Note 8 - Inventory (Tables)
12 Months Ended
Dec. 31, 2016
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
 
 
December 31,
 
 
 
2016
 
 
2015
 
Raw materials
  $
8,187
    $
12,388
 
Work in process
   
6,211
     
10,366
 
Finished goods
   
2,020
     
3,167
 
Reserve for excess and obsolete inventory
   
(1,860
)    
(5,729
)
Total
  $
14,558
    $
20,192