Bank Premises and Equipment - Summary of Bank Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Cost	$ 120,384	$ 121,919
Accumulated Depreciation & Amortization	(53,769)	(50,895)
Net Carrying Value	66,615	71,024
Land	18,546	18,269
Premises
Property, Plant and Equipment [Line Items]
Cost	83,020	85,027
Accumulated Depreciation & Amortization	(26,180)	(26,107)
Net Carrying Value	56,840	58,920
Furniture and Equipment
Property, Plant and Equipment [Line Items]
Cost	37,364	36,892
Accumulated Depreciation & Amortization	(27,589)	(24,788)
Net Carrying Value	$ 9,775	$ 12,104

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

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

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