Mortgage Servicing Rights - Roll forward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Mortgage Servicing Rights
Fair value as of the beginning of year	$ 300
Fair value at the end of year	254	$ 300
Mortgage Servicing Rights
Mortgage Servicing Rights
Fair value as of the beginning of year	300	315
Changes in fair value due to changes in valuation inputs or assumptions	(46)	(15)
Fair value at the end of year	$ 254	$ 300