Investments - Impairments on Investments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Schedule of Impairments [Line Items]
Credit impaired	$ (417)	$ (158)	$ (1,086)	$ (401)
Expected credit losses:
Held-to-maturity securities	0	0	0	(2,167)
Net impairment losses recognized in earnings	(810)	(698)	(2,633)	(3,763)
Total available-for-sale securities
Schedule of Impairments [Line Items]
Intent to sell	(78)	(1)	(495)	(299)
Credit impaired	(417)	(158)	(1,086)	(401)
Total available-for-sale securities	(495)	(159)	(1,581)	(700)
Held-to-maturity securities
Expected credit losses:
Held-to-maturity securities	0	0	0	(2,167)
Agent loans
Expected credit losses:
Agent loans	(111)	(354)	(275)	(354)
Other loans receivable
Expected credit losses:
Agent loans	(218)	(474)	(1,058)	(831)
Net impairment losses recognized in earnings	$ (204)	$ (185)	$ (777)	$ (542)