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Premises and Equipment, Net
 12 Months Ended
Dec. 31, 2023
Property, Plant and Equipment [Abstract]  
Premises and Equipment, net Premises and Equipment, net
    The following is a summary of our premises and equipment.

As of December 31,
(dollars in thousands)		20232022
Land and land improvements$12,356 $12,356 
Buildings and leasehold improvements122,301 122,243 
Furniture, fixtures, and equipment34,068 32,170 
Software106,422 97,140 
Premises and equipment, gross275,147 263,909 
Accumulated depreciation(145,646)(123,181)
Premises and equipment, net$129,501 $140,728 
    Depreciation expense for premises and equipment was $18 million, $17 million, and $16 million for the years ended December 31, 2023, 2022, and 2021, respectively.