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 equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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The total charge for the use of long-lived depreciable assets subject to a lease meeting the criteria for capitalization.

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Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the 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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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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Balance Sheet Components (Property and Equipment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Property and Equipment
Computer equipment and software	$ 609,382		$ 609,382		$ 536,457
Less: Accumulated depreciation and amortization	(316,600)		(316,600)		(254,678)
Net property and equipment	292,782		292,782		281,779
Depreciation and amortization expense	23,000	$ 22,600	69,314	$ 63,435
Assets in construction	12,700		12,700		17,200
Computer Equipment and Software
Property and Equipment
Computer equipment and software	183,918		183,918		172,048
Manufacturing Equipment
Property and Equipment
Computer equipment and software	182,977		182,977		148,820
Capital lease obligations	90,000		90,000		72,900
Accumulated depreciation of assets under capital leases	21,200		21,200		14,100
Capitalized Software And Website Development Costs
Property and Equipment
Computer equipment and software	133,197		133,197		108,837
Buildings Under Build-To-Suit Leases
Property and Equipment
Computer equipment and software	56,468		56,468		56,468
Leasehold Improvements
Property and Equipment
Computer equipment and software	22,456		22,456		21,519
Rental Equipment
Property and Equipment
Computer equipment and software	18,604		18,604		17,414
Furniture and Fixtures
Property and Equipment
Computer equipment and software	$ 11,762		$ 11,762		$ 11,351