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Income Taxes - Summary of Components of Income Before Income Taxes (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Tax Disclosure [Abstract]      
Domestic $ 25,045 $ (4,785) $ 24,056
Foreign 50,731 42,423 40,921
Income before income taxes $ 75,776 $ 37,638 $ 64,977