Annual report pursuant to Section 13 and 15(d)

Income Taxes - Summary of Earnings before Income Taxes (Detail)

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Income Taxes - Summary of Earnings before Income Taxes (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]      
Expected income tax expense $ 108,361 $ 90,696 $ 134,491
State income tax, net of federal benefit 1,278 3,051 297
Rate differential on foreign income (43,327) (40,065) (95,565)
Change in unrecognized tax benefits 2,739 820 1,449
Non-deductible compensation 7,126 6,269 6,592
Tax credits (3,264) (2,539) (2,151)
Excess tax benefit on share based compensation (251) (1,557) (2,571)
U.S. tax rate change     1,923
U.S. transition tax   (10,963) 98,015
U.S. tax on foreign earnings 9,786 9,956  
Other 3,440 2,077 (1,110)
Change in valuation allowance 2,865 2,866 7,786
Total income taxes (benefit) $ 88,753 $ 60,611 $ 149,156
Effective tax rate 17.20% 14.00% 38.80%