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Income Taxes (Tables)
3 Months Ended
Mar. 31, 2020
Income Tax Disclosure [Abstract]  
Summary Of Provision For Income Taxes three months ended March 31, 2020 and March 31, 2019:
 
For the Three Months
Ended March 31,
 
2020
 
2019
 
(Dollars in thousands)
 
 
Tax expense
$
23,946

 
$
32,418

Pretax income
146,214

 
229,854

Effective tax rates
16.4
%
 
14.1
%