For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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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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Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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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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Segment and Geographic Information (Details) $ in Thousands	3 Months Ended								12 Months Ended
Segment and Geographic Information (Details) $ in Thousands	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2019 USD ($) segment	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments \| segment									1
Property and equipment, net	$ 1,152,153				$ 910,618				$ 1,152,153	$ 910,618
Revenue	772,123	$ 709,912	$ 705,074	$ 706,508	713,363	$ 669,628	$ 662,759	$ 688,724	2,893,617	2,714,474	$ 2,489,035
U.S.
Segment Reporting Information [Line Items]
Property and equipment, net	482,700				331,500				482,700	331,500
Revenue									1,694,211	1,683,272	1,637,198
Non-U.S.
Segment Reporting Information [Line Items]
Property and equipment, net	$ 303,700				$ 235,700				303,700	235,700
Revenue									$ 1,199,400	$ 1,031,200	$ 855,000
Sales \| Geographic Concentration Risk \| U.S.
Segment Reporting Information [Line Items]
Concentration risk percent (more than)									10.00%	10.00%	10.00%