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Fair Value of Financial Instruments (Schedule of Change in Fair Value of the Level III Stock Warrants Liability) (Details) - USD ($)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value of stock warrant liability, beginning $ 122,590 $ 92,150
Change in fair value during the period 7,263 30,440
Cashless exercises during the period $ 323,021  
Fair value of stock warrant liability, ending $ 122,590