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 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Property, Plant and Equipment [Line Items]        
Depreciation expense $ 16,526 $ 11,863 $ 32,515 $ 27,520
Laboratory Equipment [Member]
       
Property, Plant and Equipment [Line Items]        
Equipment retired     $ 885,000