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Income Taxes - Components of Income Tax Provision (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Current:      
Federal $ 31,981 $ 53,962 $ 50,645
State and local 7,581 8,278 8,105
Total current expense 39,562 62,240 58,750
Deferred:      
Federal (3,487) 851 4,106
State and local (253) 458 617
Total deferred expense (benefit) (3,740) 1,309 4,723
Income tax expense $ 35,822 $ 63,549 $ 63,473