Investments - Narrative (Details)	12 Months Ended
	Dec. 31, 2024 USD ($) security	Dec. 31, 2023 USD ($) security
Debt Securities, Available-for-Sale [Line Items]
Pledged securities	$ 0	$ 0
Sale of AFS securities	$ 0	$ 0
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Accrued interest receivable	Accrued interest receivable
Accrued interest receivable on securities	$ 48,000	$ 49,000
Credit losses	0	0
Investments	$ 9,500,000	$ 10,100,000
Number of securities in unrealized loss position for less than 12 months | security	1	1
Number of securities in unrealized loss position for more than 12 months | security	15	16
Municipal bonds
Debt Securities, Available-for-Sale [Line Items]
Number of portfolio securities | security	11	11
Agency mortgage-backed securities
Debt Securities, Available-for-Sale [Line Items]
Number of portfolio securities | security	11	12