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EQUIPMENT AND PROPERTY, NET
 12 Months Ended
Dec. 31, 2023
Property, Plant and Equipment [Abstract]  
EQUIPMENT AND PROPERTY, NET EQUIPMENT AND PROPERTY, NET
Equipment and property are presented at cost less accumulated depreciation and are detailed as follows:
December 31,20232022
(in thousands)
Buildings$51,339 $51,223 
Operating equipment144,723 132,411 
Furniture and fixtures22,035 20,389 
Computer equipment and systems247,681 233,108 
465,778 437,131 
Less: accumulated depreciation(360,421)(333,298)
105,357 103,833 
Land21,304 24,213 
Equipment and property, net$126,661 $128,046 
Included in computer equipment and systems at December 31, 2023 and 2022, are costs for internal use software of $153.4 million and $147.1 million, respectively. The related accumulated depreciation was $127.5 million and $117.3 million at December 31, 2023 and 2022, respectively.
Included in equipment and property, net at December 31, 2023 and 2022, are fixed assets held in foreign countries of $12.0 million, and $9.5 million, respectively.
Total depreciation expense was approximately $33.3 million in 2023, $35.6 million in 2022 and $40.6 million in 2021.