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Inventories (Tables)
12 Months Ended
Sep. 30, 2011
Inventories [Abstract] 
Summary of inventories
                 
    2011     2010  
Propane gas
  $ 115,211     $ 94,561  
Materials, supplies and other
    17,552       16,840  
Appliances for sale
    3,052       2,721  
 
           
Total inventories
  $ 135,815     $ 114,122  
 
           
In addition to inventories on hand, we also enter into contracts to purchase propane to meet a portion of our supply requirements. Generally, these contracts are one- to three-year agreements subject to annual price and quantity adjustments.