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Premises and Equipment, Net
 12 Months Ended
Dec. 31, 2022
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)		20222021
Land and land improvements$12,356 $12,356 
Buildings and leasehold improvements122,243 122,300 
Furniture, fixtures, and equipment32,170 29,955 
Software97,140 88,710 
Premises and equipment, gross263,909 253,321 
Accumulated depreciation(123,181)(102,805)
Premises and equipment, net$140,728 $150,516 
    Depreciation expense for premises and equipment was $17 million, $16 million, and $15 million for the years ended December 31, 2022, 2021, and 2020, respectively.