CONSOLIDATED FINANCIAL STATEMENT DETAILS - Property and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property and equipment, net of accumulated depreciation and amortization:
Property and equipment, gross	$ 605,598	$ 586,981
Accumulated depreciation and amortization	(286,798)	(271,811)
Property and equipment, net of accumulated depreciation and amortization	318,800	315,170
Buildings and leasehold improvements
Property and equipment, net of accumulated depreciation and amortization:
Property and equipment, gross	249,026	246,038
Computer equipment and capitalized software
Property and equipment, net of accumulated depreciation and amortization:
Property and equipment, gross	229,083	218,529
Furniture and other equipment
Property and equipment, net of accumulated depreciation and amortization:
Property and equipment, gross	86,694	88,930
Projects in progress
Property and equipment, net of accumulated depreciation and amortization:
Property and equipment, gross	29,204	19,094
Land
Property and equipment, net of accumulated depreciation and amortization:
Property and equipment, gross	$ 11,591	$ 14,390

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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