Quarterly report pursuant to Section 13 or 15(d)

Property and Equipment, net - Additional Information (Detail)

v2.4.0.8
Property and Equipment, net - Additional Information (Detail) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Property, Plant and Equipment [Line Items]        
Depreciation expense $ 23,254 $ 13,169 $ 55,769 $ 40,689
Laboratory Equipment [Member]
       
Property, Plant and Equipment [Line Items]        
Equipment retired     $ 885,000