Annual report pursuant to Section 13 and 15(d)

Income Taxes - Reconciliation of the Beginning and Ending Amount of Unrecognized Tax Benefits (Detail)

v2.4.0.8
Income Taxes - Reconciliation of the Beginning and Ending Amount of Unrecognized Tax Benefits (Detail) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Income Tax Disclosure [Abstract]    
Beginning balance $ 880,638 $ 550,962
Additions based on tax positions related to the current year 361,143 329,676
Additions for the tax positions of prior years      
Reductions for the tax positions of prior years      
Ending balance $ 1,241,781 $ 880,638