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Property And Equipment
 12 Months Ended
Dec. 31, 2022
Property, Plant and Equipment [Abstract]  
Property And Equipment Property and Equipment
A summary of property and equipment at December 31, 2022 and 2021 is as follows:
20222021
Computer software, purchased and internally developed$5,604 $6,115 
Computer equipment, furniture and other equipment828 1,314 
Leasehold improvements648 641 
Building and improvements38 172 
Land and improvements1 17 
Property and equipment, gross7,119 8,259 
Accumulated depreciation and amortization(2,803)(4,340)
Property and equipment, net$4,316 $3,919 
Depreciation expense for 2022, 2021 and 2020 was $123, $136 and $176, respectively. Amortization expense on computer software and leasehold improvements for 2022, 2021 and 2020 was $661, $532 and $462, respectively, which includes amortization expense on computer software, both purchased and internally developed, for 2022, 2021 and 2020 of $599, $485 and $412, respectively. Capitalized costs related to the internal development of software of $5,354 and $5,626 at December 31, 2022 and 2021, respectively, are reported with computer software.
Impairment of property and equipment for the years ended December 31, 2022, 2021 and 2020 was $7, $73, and $198, respectively, which is included in selling, general and administrative expenses and primarily related to our activities disclosed in Note 4, “Business Optimization Initiatives.”