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Marketable Securities (Details) - USD ($)
Mar. 31, 2017
Sep. 30, 2016
Marketable Securities [Abstract]    
Available-for-sale Securities, Amortized Cost Basis $ 13,927  
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax 584 $ 135
Available-for-sale Securities, Debt Securities $ 13,343