Income Taxes - Reconciliation Of Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]
Computed tax expense (benefit) at 21%	$ 20,880	$ (140,850)	$ 62,854
Tax-exempt interest income	(13,640)	(11,864)	(11,577)
Dividends received deduction	(1,237)	(1,364)	(1,311)
State tax (benefit) expense	(3,539)	(1,597)	2,134
Nondeductible expenses	639	279	843
Other, net	(11)	(2,647)	(1,573)
Income tax expense (benefit)	$ 3,092	$ (158,043)	$ 51,370