Fixed Assets, Net - Components of Fixed Assets, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Property, Plant and Equipment
Fixed assets, gross	$ 352,477	$ 339,838
Accumulated depreciation and amortization	(178,756)	(161,803)
Fixed assets, net	173,721	178,035
Leasehold improvements, furniture and fixtures, and other fixed assets
Property, Plant and Equipment
Fixed assets, gross	252,504	245,262
Software, including software development costs
Property, Plant and Equipment
Fixed assets, gross	60,836	56,883
Computer and communications equipment
Property, Plant and Equipment
Fixed assets, gross	$ 39,137	$ 37,693

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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