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Income Taxes - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Tax Disclosure [Abstract]      
Change in deferred tax valuation allowance $ 0 $ 0 $ 0
Valuation allowance $ 0    
U.S. federal income tax statutory rate 35.00%    
Company recognized uncertain tax positions $ 0 $ 0 $ 0