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Income Taxes (Tables)
9 Months Ended
Sep. 30, 2020
Income Tax Disclosure [Abstract]  
Summary Of Provision For Income Taxes
The following table summarizes the provision for income taxes for the three and nine months ended September 30, 2020 and 2019:
For the Three Months
Ended September 30,
For the Nine Months
Ended September 30,
2020201920202019
(Dollars in thousands)
Tax expense$18,104 $20,755 $61,838 $90,940 
Pretax income112,338 196,631 371,116 660,620 
Effective tax rates16.1 %10.6 %16.7 %13.8 %