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PROPERTY, EQUIPMENT AND LEASEHOLD IMPROVEMENTS, NET
 9 Months Ended
Sep. 30, 2024
Property, Plant and Equipment [Abstract]  
PROPERTY, EQUIPMENT AND LEASEHOLD IMPROVEMENTS, NET PROPERTY, EQUIPMENT AND LEASEHOLD IMPROVEMENTS, NET
Property, equipment and leasehold improvements, net consisted of the following as of the dates indicated:
As of
September 30,December 31,
(in thousands)20242023
Computer & related equipment$167,939 $192,008 
Furniture & fixtures15,980 16,169 
Leasehold improvements56,412 58,582 
Work-in-process1,646 897 
Subtotal241,977 267,656 
Accumulated depreciation and amortization(179,660)(211,736)
Property, equipment and leasehold improvements, net$62,317 $55,920 
Depreciation and amortization expense of property, equipment and leasehold improvements was $4.3 million and $5.3 million for the three months ended September 30, 2024 and 2023, respectively.
Depreciation and amortization expense of property, equipment and leasehold improvements was $12.6 million and $15.9 million for the nine months ended September 30, 2024 and 2023, respectively.