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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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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PROPERTY AND EQUIPMENT, NET (Components of Property and Equipment and Depreciation) (Details) - USD ($) $ in Thousands		12 Months Ended
	Nov. 01, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property and equipment, gross		$ 259,566	$ 181,005
Less accumulated depreciation and amortization		(94,307)	(78,359)
Total		165,259	102,646	$ 86,419
Depreciation and amortization expense		35,379	28,539	21,000
Payments to acquire property and equipment		$ 99,308	37,574	29,806
Computer hardware
Property, Plant and Equipment [Line Items]
Weighted average useful life (in years)		3 years
Property and equipment, gross		$ 96,286	74,884
Buildings
Property, Plant and Equipment [Line Items]
Weighted average useful life (in years)		47 years
Property and equipment, gross		$ 51,300	34,458
Purchased computer software
Property, Plant and Equipment [Line Items]
Weighted average useful life (in years)		3 years
Property and equipment, gross		$ 32,115	10,406
Leasehold improvements
Property, Plant and Equipment [Line Items]
Weighted average useful life (in years)		8 years
Property and equipment, gross		$ 30,634	25,036
Furniture, fixture and other equipment
Property, Plant and Equipment [Line Items]
Weighted average useful life (in years)		7 years
Property and equipment, gross		$ 28,193	21,544
Office equipment
Property, Plant and Equipment [Line Items]
Weighted average useful life (in years)		6 years
Property and equipment, gross		$ 18,901	13,203
Land improvements
Property, Plant and Equipment [Line Items]
Weighted average useful life (in years)		18 years
Property and equipment, gross		$ 2,137	1,474
Assets leased to third parties under operating lease
Property, Plant and Equipment [Line Items]
Property and equipment, gross		10,654	0
Less accumulated depreciation and amortization		(101)
Depreciation and amortization expense		42
Belarus
Property, Plant and Equipment [Line Items]
Total		$ 75,984	$ 50,085	$ 49,866
Belarus \| Buildings
Property, Plant and Equipment [Line Items]
Payments to acquire property and equipment	$ 18,904