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Note 3 - Inventories (Tables)
9 Months Ended
Sep. 30, 2015
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
 
 
Inventory as of
 
(in thousands)
 
September 30, 2015
 
 
December 31, 2014
 
Unprocessed
  $ 182,441     $ 238,226  
Processed and finished
    46,590       72,882  
Totals
  $ 229,031     $ 311,108