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Merck GHI Financing (Details Textual) - USD ($)
9 Months Ended
Jul. 14, 2015
Sep. 30, 2015
Sep. 30, 2014
Common Stock and Note Purchase Agreement [Line Items]      
Proceeds from Issuance of Common Stock   $ 4,958,335 $ 0
Merck GHI Financing Agreement [Member]      
Common Stock and Note Purchase Agreement [Line Items]      
Sale of Stock, Number of Shares Issued in Transaction 1,136,364    
Shares Issued, Price Per Share $ 4.40    
Proceeds from Issuance of Common Stock $ 5,000,000    
Debt Instrument, Interest Rate, Stated Percentage 8.00%    
Debt Instrument, Face Amount $ 1,000,000    
Fees Related to Common Stock and Debt Transaction 50,000    
Payments of Debt Issuance Costs 8,000    
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs $ 42,000