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Note 2 - Inventories
3 Months Ended
Mar. 31, 2012
Inventory Disclosure [Text Block]
2)           Inventories

The carrying values of inventory were as follows as of:

   
March 31, 2012
   
December 31, 2011
 
At average cost (approximates current cost)
           
Finished goods
  $ 38,858     $ 19,481  
Work in process
    2,935       3,643  
Raw materials and supplies
    39,357       47,833  
      81,150       70,957  
LIFO reserve
    (13,198 )     (13,518 )
Total inventories
  $ 67,952     $ 57,439