Investments - Impairments on Investments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Schedule of Impairments [Line Items]
Credit impaired	$ (304)	$ (79)	$ (669)	$ (243)
Expected credit losses:
Held-to-maturity securities	0	0	0	(2,167)
Net impairment losses recognized in earnings	(909)	(388)	(1,823)	(3,065)
Total available-for-sale securities
Schedule of Impairments [Line Items]
Intent to sell	(417)	(124)	(417)	(298)
Credit impaired	(304)	(79)	(669)	(243)
Total available-for-sale securities	(721)	(203)	(1,086)	(541)
Held-to-maturity securities
Expected credit losses:
Held-to-maturity securities	0	0	0	(2,167)
Agent loans
Expected credit losses:
Net impairment losses recognized in earnings	0	0	(164)	0
Other loans receivable
Expected credit losses:
Net impairment losses recognized in earnings	$ (188)	$ (185)	$ (573)	$ (357)