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Income Taxes - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Income Tax Disclosure [Abstract]    
Valuation allowance $ 12,313,000 $ 9,108,000
Federal income tax net operating loss carry forward $ 14,500,000  
Net operating loss carry forwards expiration beginning year 2031