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Income Taxes - Schedule of Domestic and Foreign Components of Pretax Income from Operations (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Tax Disclosure [Abstract]      
United States $ 2,382 $ 4,637 $ (3,052)
Foreign 76,194 82,746 72,253
Income before income taxes $ 78,576 $ 87,383 $ 69,201