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Fair Value Measurements (Details) (Recurring, USD $)
Mar. 31, 2013
Sep. 30, 2012
Fair Value
   
Available-for-sale securities $ 2,229,560 $ 2,271,721
Quoted Prices In Active Markets for Identical Assets/Liabilities (Level 1)
   
Available-for-sale securities 2,229,560 2,271,721
Level 2
   
Available-for-sale securities      
Level 3
   
Available-for-sale securities