XML 98 R80.htm IDEA: XBRL DOCUMENT v3.25.0.1
Income Taxes (Income Tax Expense Differences from the Amount Computed by Applying the U.S. Federal Income Tax Rate) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Income Taxes      
U.S. Federal income tax rate (as a percent) 21.00% 21.00% 21.00%
Reasons for the difference of income tax expense      
Computed expected tax expense $ 107,134 $ 110,065 $ 80,893
Change in taxes resulting from:      
Tax-exempt interest income (3,233) (3,663) (2,433)
State tax, net of federal income taxes and tax credit and refunds 4,636 4,808 4,094
Other investment income (2,626) (2,761) (1,391)
Net investment expense, low-income housing investment (2,531) 1,974 1,906
Other (3,827) 1,321 (662)
Total income taxes $ 99,553 $ 111,744 $ 82,407