CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Interest expense (income) on term debt	$ 5,543	$ 5,765	$ 16,956	$ 16,756
Net security gains (loss)	(9,520)	(114)	(19,573)	(1,532)
Income tax expense (benefit)	(20,533)	(13,479)	(48,077)	(44,181)
Reclassification out of accumulated other comprehensive income (loss) | Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
Interest expense (income) on term debt	(247)	(63)	(457)	638
Reclassification out of accumulated other comprehensive income (loss) | Accumulated Net Unrealized Investment Gain (Loss)
Net security gains (loss)	(9,299)	59	(19,855)	(1,370)
Reclassification out of accumulated other comprehensive income (loss) | Accumulated Other Comprehensive Loss
Income tax expense (benefit)	$ (5,729)	$ 9,877	$ 5,352	$ 19,253