Bank Premises and Equipment, net - Bank Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Bank premises and equipment, gross	$ 85,261	$ 79,785
Less: Accumulated depreciation and amortization	63,988	58,035
Bank premises and equipment, net	21,273	21,750
Leasehold Improvements [Member]
Bank premises and equipment, gross	50,976	46,992
Equipment and Furniture [Member]
Bank premises and equipment, gross	$ 34,285	$ 32,793

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 2: http://www.xbrl.org/2003/role/exampleRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
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