Land, Premises and Equipment, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Jul. 01, 2024	Feb. 06, 2024	Dec. 31, 2023
Land, Premises and Equipment, Net
Land, Premises and Equipment	$ 65,006		$ 65,006				$ 69,457
Less accumulated depreciation	(47,678)		(47,678)				(51,517)
Total	17,328		17,328				17,940
Depreciation expense	700	$ 600	1,300	$ 1,200
Carrying value	3,800		3,800
Held-for-Sale | Branch in Shorewood
Land, Premises and Equipment, Net
Carrying value						$ 2,100
Gain on the sale upon closing						$ 2,800
Subsequent Events | Held-for-Sale | Branch in South Fargo
Land, Premises and Equipment, Net
Carrying value					$ 1,700
Gain on the sale upon closing					$ 5,300
Land
Land, Premises and Equipment, Net
Land, Premises and Equipment	3,036		3,036				4,542
Buildings and improvements
Land, Premises and Equipment, Net
Land, Premises and Equipment	23,177		23,177				28,172
Leasehold improvements
Land, Premises and Equipment, Net
Land, Premises and Equipment	2,657		2,657				2,657
Furniture, fixtures, and equipment
Land, Premises and Equipment, Net
Land, Premises and Equipment	$ 36,136		$ 36,136				$ 34,086