Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Premises and equipment
Cost	$ 144,789	$ 161,545
Accumulated Depreciation/Amortization	72,434	73,540
Net Book Value	72,355	88,005
Other Assets
Premises and equipment
Assets held for sale	4,600	0
Land
Premises and equipment
Cost	29,741	42,375
Net Book Value	29,741	42,375
Buildings
Premises and equipment
Cost	54,075	59,313
Accumulated Depreciation/Amortization	24,427	26,959
Net Book Value	29,648	32,354
Leasehold improvements
Premises and equipment
Cost	2,790	2,324
Accumulated Depreciation/Amortization	1,280	1,004
Net Book Value	1,510	1,320
Furniture and equipment
Premises and equipment
Cost	58,183	57,533
Accumulated Depreciation/Amortization	46,727	45,577
Net Book Value	$ 11,456	$ 11,956