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Investments (Schedule of Held-To-Maturity Investments) (Details) (Certificates of deposit, commercial paper [Member], USD $)
Sep. 30, 2014
Certificates of deposit, commercial paper [Member]
 
Schedule of Trading Securities and Other Trading Assets [Line Items]  
Amortized Cost $ 12,115,118
Gross Unrealized (Losses) (3,704)
Estimated Fair Value 12,111,414
Less than 1 year 12,115,118
Total $ 12,115,118