Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Summary of Income Tax Expense and Effective Tax Rate (Detail)

v3.4.0.3
Income Taxes - Summary of Income Tax Expense and Effective Tax Rate (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Income Tax Disclosure [Abstract]    
Income tax expense $ 30,568 $ 19,120
Effective tax rate 21.80% 23.70%