Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Detail)

v2.4.0.8
Income Taxes - Additional Information (Detail) (USD $)
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Income Tax Disclosure [Abstract]      
Provision for income taxes $ 0 $ 0  
Valuation allowance against deferred tax assets 10,000,000   9,500,000
Unrecognized tax positions $ 187,617   $ 185,961