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Income Taxes - Provision for Income Taxes (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Current expense:      
Federal $ 31,943 $ 19,223 $ 22,908
State 8,461 6,498 4,490
Deferred expense:      
Federal 17,514 3,188 20,402
State 3,406 238 4,350
Deferred income tax expense 20,920 3,426 24,752
Income tax expense $ 61,324 $ 29,147 $ 52,150