Investments - Allowance for Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses, beginning of period	$ 513	$ 597
Provision and recoveries	1,389	484
Sales/collections and write-offs	(1,000)	(568)
Allowance for credit losses, end of period	902	513	$ 597
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses, beginning of period	2,167	0
Provision and recoveries	0	2,167
Sales/collections and write-offs	0	0
Allowance for credit losses, end of period	2,167	2,167	0
Other loans receivable
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses, beginning of period	12,198	11,081
Provision and recoveries	2,928	1,117
Sales/collections and write-offs	(25)	0
Allowance for credit losses, end of period	15,101	12,198	11,081
Agent loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses, beginning of period	1,312	957
Provision and recoveries	368	355	0
Sales/collections and write-offs	0	0
Allowance for credit losses, end of period	$ 1,680	$ 1,312	$ 957