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Note 8 (Tables)
9 Months Ended
Jun. 30, 2018
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   
June 30,
   
September 30,
 
   
2018
   
2017
 
   
(unaudited)
         
   
(in thousands)
 
                 
Finished goods
  $
54,183
    $
45,394
 
Raw Materials
   
25,082
     
22,682
 
Packaging materials
   
10,744
     
8,833
 
Equipment parts & other
   
26,185
     
26,359
 
Total Inventories
  $
116,194
    $
103,268