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Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Income Taxes [Line Items]        
Income taxes (benefit) expense $ 1,203 $ (393) $ 2,263 $ (685)
Effective tax rate     25.90% 339.10%