Bank Premises and Equipment - Net Book Value (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Total bank premises and equipment	$ 186,627	$ 158,137
Accumulated depreciation	(82,771)	(75,203)
Net book value	103,856	82,934
Land
Property, Plant and Equipment [Line Items]
Total bank premises and equipment	23,680	18,746
Building and premises
Property, Plant and Equipment [Line Items]
Total bank premises and equipment	120,587	101,478
Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Total bank premises and equipment	$ 42,360	$ 37,913