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Income Taxes - Summary of Components of Income Tax Provision (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]                      
Federal, Current                 $ 73,333 $ 95,955 $ 122,379
Federal, Deferred                 (141,359) (21,386) (63,981)
Federal income tax provision, Total                 (68,026) 74,569 58,398
State, Current                 11,777 26,145 19,084
State, Deferred                 (35,637) (4,261) 2,749
State income tax provision, Total                 (23,860) 21,884 21,833
Income tax provision, Total $ 7,824 $ (125,788) $ 17,116 $ 8,962 $ 21,701 $ 23,550 $ 28,482 $ 22,720 $ (91,886) $ 96,453 $ 80,231