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Income Taxes (Income Tax Expense (Benefit) ) (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Current expense:      
Federal $ 50,703 $ 44,357 $ 4,868
State 16,616 22,300 8,337
Foreign 5,526 3,124 133
Current expense (benefit), Total 72,845 69,781 13,338
Deferred expense (benefit):      
Federal 28,618 59,508 (323,326)
State 3,712 1,639 17,731
Foreign (1,377) 461 541
Deferred expense (benefit), Total 30,953 61,608 (305,054)
Income tax expense $ 103,798 $ 131,389 $ (291,716)