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Concentration of Credit Risk (Table)
12 Months Ended
Sep. 30, 2012
Concentration of Credit Risk Tables [Abstract]  
Schedules of Concentration of Risk, by Risk Factor
 September 30, 2012 September 30, 2011
    
Investment grade 60% 54%
Non-investment grade40% 46%
    Total100% 100%
Fair Value, Concentration of Risk
         
  Natural Gas Distribution Segment (1)  Nonregulated Segment  Consolidated
  (In thousands)
         
Investment grade counterparties$ - $ 4 $ 4
Non-investment grade counterparties  -   -   -
 $ - $ 4 $ 4
         
(1)Counterparty risk for our natural gas distribution segment is minimized because hedging
gains and losses are passed through to our customers.