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Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Property and Equipment
Total	$ 1,390,329	$ 1,269,119
Less accumulated depreciation and amortization	264,446	235,138
Property and equipment, net	1,125,883	1,033,981
Land [Member]
Property and Equipment
Total	400,163	364,475
Buildings [Member]
Property and Equipment
Total	$ 553,961	505,414
Buildings [Member] | Minimum [Member]
Property and Equipment
Property, Plant and Equipment, Estimated Useful Lives	25
Buildings [Member] | Maximum [Member]
Property and Equipment
Property, Plant and Equipment, Estimated Useful Lives	50
Leasehold improvements [Member]
Property and Equipment
Total	$ 170,060	155,585
Machinery and equipment [Member]
Property and Equipment
Total	$ 100,164	90,993
Machinery and equipment [Member] | Minimum [Member]
Property and Equipment
Property, Plant and Equipment, Estimated Useful Lives	7
Machinery and equipment [Member] | Maximum [Member]
Property and Equipment
Property, Plant and Equipment, Estimated Useful Lives	20
Furniture and fixtures [Member]
Property and Equipment
Total	$ 87,691	82,688
Furniture and fixtures [Member] | Minimum [Member]
Property and Equipment
Property, Plant and Equipment, Estimated Useful Lives	3
Furniture and fixtures [Member] | Maximum [Member]
Property and Equipment
Property, Plant and Equipment, Estimated Useful Lives	10
Company vehicles [Member]
Property and Equipment
Total	$ 11,632	11,603
Company vehicles [Member] | Minimum [Member]
Property and Equipment
Property, Plant and Equipment, Estimated Useful Lives	3
Company vehicles [Member] | Maximum [Member]
Property and Equipment
Property, Plant and Equipment, Estimated Useful Lives	5
Construction in progress [Member]
Property and Equipment
Total	$ 66,658	$ 58,361

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Property and equipment.

+ References

No definition available.

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ 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 (c)
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-Publisher FASB
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-Section S99
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- Definition

Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=51655414&loc=d3e18780-107790

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
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-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 13
-Subparagraph a
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-Publisher SEC
-Name Regulation S-X (SX)
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