Investments - Impairments on Investments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Schedule of Impairments [Line Items]
Credit recovered (impaired)	$ 1	$ (304)	$ (274)	$ (669)
Expected credit losses:
Net impairment losses recognized in earnings	(591)	(909)	(1,267)	(1,823)
Total available-for-sale securities
Schedule of Impairments [Line Items]
Intent to sell	(349)	(417)	(339)	(417)
Credit recovered (impaired)	1	(304)	(274)	(669)
Total available-for-sale securities	(348)	(721)	(613)	(1,086)
Agent loans
Expected credit losses:
Agent loans	0	0	(199)	(164)
Other loans receivable
Expected credit losses:
Agent loans	(289)	(446)	(545)	(840)
Net impairment losses recognized in earnings	$ (243)	$ (188)	$ (455)	$ (573)