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Note 4 - Inventories
3 Months Ended
Mar. 31, 2012
Inventory Disclosure [Text Block]
4. Inventories

The components of inventories at March 31, 2012 and December 31, 2011 are as follows (in thousands):

   
March 31, 2012
   
December 31, 2011
 
Raw material
  $ 27,186     $ 26,919  
Work in process
    12,967       10,704  
Finished goods
    37,576       37,952  
Total inventories
  $ 77,729     $ 75,575