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Significant Accounting Policies - Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Significant Accounting Policies Line Items [Line Items]
Gross Carrying Amount	$ 268,480	$ 274,628
Accumulated Amortization / Depreciation	(240,843)	(210,806)
Net Carrying Amount	27,637	63,822
Internal-use software
Significant Accounting Policies Line Items [Line Items]
Gross Carrying Amount	155,605	163,408
Accumulated Amortization / Depreciation	(135,144)	(110,845)
Net Carrying Amount	20,461	52,563
Leasehold improvements
Significant Accounting Policies Line Items [Line Items]
Gross Carrying Amount	39,472	39,339
Accumulated Amortization / Depreciation	(35,747)	(32,182)
Net Carrying Amount	3,725	7,157
Furniture and equipment
Significant Accounting Policies Line Items [Line Items]
Gross Carrying Amount	73,403	71,881
Accumulated Amortization / Depreciation	(69,952)	(67,779)
Net Carrying Amount	$ 3,451	$ 4,102

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

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