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Note 10 - Inventories (Tables)
9 Months Ended
Sep. 30, 2014
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]
   
September 30,
2014
   
December 31,
2013
 
   
(in thousands)
 
Raw materials and supplies
  $ 42,049     $ 34,470  
Work in process
    23,558       14,698  
Finished goods
    23,430       26,501  
Total inventory
    89,037       75,669  
Less reserve for excess and obsolete inventories
    (985 )     (5,753 )
Total inventory, net
  $ 88,052     $ 69,916