Fixed Assets, Net - Components of Fixed Assets, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Property, Plant and Equipment
Fixed assets, gross	$ 319,221	$ 286,718
Accumulated depreciation and amortization	(142,407)	(131,079)
Fixed assets, net	176,814	155,639
Leasehold improvements, furniture and fixtures, and other fixed assets
Property, Plant and Equipment
Fixed assets, gross	233,645	207,020
Software, including software development costs
Property, Plant and Equipment
Fixed assets, gross	53,394	48,112
Computer and communications equipment
Property, Plant and Equipment
Fixed assets, gross	$ 32,182	$ 31,586

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 2: http://www.xbrl.org/2003/role/exampleRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
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-Name Accounting Standards Codification
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