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Note 2 - Inventories (Tables)
3 Months Ended
Dec. 31, 2012
Schedule of Inventory, Current [Table Text Block]
   
December 31,
2012
   
September 30,
2012
 
Raw materials
  $ 10,363     $ 8,631  
Work-in-process
    13,772       15,192  
Finished goods
    52,883       40,787  
Consigned inventory
    2,567       2,896  
Supplies and other
    350       436  
    $ 79,935     $ 67,942