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Fair Value Measurements (Summary Of Reconciliation Of Assets Classified As Level 3 Measurements) (Details) (USD $)
6 Months Ended
Mar. 31, 2014
Fair Value Measurements [Abstract]  
Balance of Level 3 as of October 1, 2013 $ 242,902
Included in earnings (373,999)
Included in other comprehensive income (loss)   
Purchases, issuances and settlements (411,251)
Transfers in and out of Level 3   
Balance of Level 3 as of March 31, 2014 $ (542,348)