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Property and Equipment (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Property Plant And Equipment Net By Type [Abstract] |  |  |
Property and equipment, gross | $ 2,752,111 | $ 2,493,580 |
Less accumulated depreciation and amortization | (673,988) | (596,339) |
Property and equipment, net | $ 2,078,123 | 1,897,241 | $ 1,916,386
Minimum |  |  |
Property Plant And Equipment Net By Type [Abstract] |  |  |
Useful life | 1 year |  |
Land |  |  |
Property Plant And Equipment Net By Type [Abstract] |  |  |
Property and equipment, gross | $ 129,421 | 116,517 |
Buildings and improvements |  |  |
Property Plant And Equipment Net By Type [Abstract] |  |  |
Property and equipment, gross | $ 2,009,279 | 1,853,409 |
Buildings and improvements | Minimum |  |  |
Property Plant And Equipment Net By Type [Abstract] |  |  |
Useful life | 2 years |  |
Buildings and improvements | Maximum |  |  |
Property Plant And Equipment Net By Type [Abstract] |  |  |
Useful life | 50 years |  |
Leasehold improvements |  |  |
Property Plant And Equipment Net By Type [Abstract] |  |  |
Property and equipment, gross | $ 288,614 | 270,760 |
Leasehold improvements | Minimum |  |  |
Property Plant And Equipment Net By Type [Abstract] |  |  |
Useful life | 1 year |  |
Leasehold improvements | Maximum |  |  |
Property Plant And Equipment Net By Type [Abstract] |  |  |
Useful life | 29 years |  |
Equipment |  |  |
Property Plant And Equipment Net By Type [Abstract] |  |  |
Property and equipment, gross | $ 193,281 | 186,095 |
Equipment | Minimum |  |  |
Property Plant And Equipment Net By Type [Abstract] |  |  |
Useful life | 3 years |  |
Equipment | Maximum |  |  |
Property Plant And Equipment Net By Type [Abstract] |  |  |
Useful life | 10 years |  |
Furniture, fixtures and computer software |  |  |
Property Plant And Equipment Net By Type [Abstract] |  |  |
Property and equipment, gross | $ 57,204 | 52,225 |
Furniture, fixtures and computer software | Maximum |  |  |
Property Plant And Equipment Net By Type [Abstract] |  |  |
Useful life | 7 years |  |
Facility construction in progress |  |  |
Property Plant And Equipment Net By Type [Abstract] |  |  |
Property and equipment, gross | $ 74,312 | $ 14,574 |

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition 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. + References No definition available. + Details
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