Financial Instruments With Off-balance Sheet Risk - Financial Instruments With Credit Risk (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Ceded Credit Risk [Line Items]
Commitments to extend credit	$ 92,530	$ 154,307
Unused lines of credit
Ceded Credit Risk [Line Items]
Commitments to extend credit	63,435	100,986
Undisbursed construction loans
Ceded Credit Risk [Line Items]
Commitments to extend credit	2,607	12,000
Home equity lines of credit
Ceded Credit Risk [Line Items]
Commitments to extend credit	26,488	26,878
Future loan commitments
Ceded Credit Risk [Line Items]
Commitments to extend credit	0	14,365
Financial standby letters of credit
Ceded Credit Risk [Line Items]
Commitments to extend credit	$ 0	$ 78