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Organization and Accounting Policies (Details 1)
9 Months Ended 12 Months Ended
Jun. 30, 2012
Sep. 30, 2011
Fair value of each option grant    
Dividend yield 6.43% 6.88%
Expected volatility 19.24% 20.51%
Risk-free interest rate 1.41% 2.77%
Expected lives (years) 8 years 8 years
Estimated forfeitures 0 0