Fair Value of Assets and Liabilities - Nonrecurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Fair value, assets and liabilities measured on recurring and non recurring basis
Servicing rights	$ 2,062	$ 2,314	$ 1,892	$ 2,137
Non recurring
Fair value, assets and liabilities measured on recurring and non recurring basis
Collateral dependent loans	3,998	2,813
Foreclosed assets	32	30
Servicing rights	2,052	2,643
Non recurring | Level 3
Fair value, assets and liabilities measured on recurring and non recurring basis
Collateral dependent loans	3,998	2,813
Foreclosed assets	32	30
Servicing rights	$ 2,052	$ 2,643