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Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Income Tax Disclosure [Abstract]    
Income tax benefit $ 151 $ (36)
Effective income tax rate 2.00%  
U.S. federal statutory rate 35.00%  
State (net of federal benefit) statutory rate 6.20%