Investments - Schedule of Amortized Cost and Fair Value of Mortgage-backed Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Amortized Cost
Due after one year through five years	$ 454
Due after five years through ten years	1,717
Due after ten years	4,162
Agency mortgage-backed securities	2,616
Amortized Cost	8,949	$ 9,112
Estimated Fair Value
Due after one year through five years	455
Due after five years through ten years	1,623
Due after ten years	3,136
Agency mortgage-backed securities	2,307
Estimated Fair Value	7,521	7,790
Amortized Cost
Due after one year through five years	0
Due after five years through ten years	0
Due after ten years	704
Agency mortgage-backed securities	1,409
Total	2,113	2,130
Estimated Fair Value
Due after one year through five years	0
Due after five years through ten years	0
Due after ten years	512
Agency mortgage-backed securities	1,175
Total	$ 1,687	$ 1,712