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Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Detail) (USD $)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2014
Jun. 30, 2014
Dec. 31, 2013
Income Tax Disclosure [Abstract]      
U.S. federal statutory rate applied to pretax income   $ (1,127,157) $ (6,051,780)
Permanent differences   308,823 2,739,048
State taxes and other   (133,666) 1,597,415
Change in valuation allowance   952,000 1,715,317
Total income tax expense (benefit) $ 0 $ 0 $ 0