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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-Publisher FASB

-Name Accounting Standards Codification

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

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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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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

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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 of accelerated depreciation charged against earnings associated with exit from or disposal of business activities or restructuring plan.

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Property and Equipment (Details) (USD $)	12 Months Ended
Property and Equipment (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 1,006,367,000us-gaap_PropertyPlantAndEquipmentGross	$ 946,273,000us-gaap_PropertyPlantAndEquipmentGross
Accumulated depreciation	(411,052,000)	(360,775,000)
Property, Plant and Equipment, Net	595,315,000us-gaap_PropertyPlantAndEquipmentNet	585,498,000us-gaap_PropertyPlantAndEquipmentNet
Depreciation	55,000,000us-gaap_Depreciation	49,600,000us-gaap_Depreciation	44,400,000us-gaap_Depreciation
Restructuring and Related Cost, Accelerated Depreciation	2,400,000
Asset impairment loss	4,843,000us-gaap_AssetImpairmentCharges	0us-gaap_AssetImpairmentCharges	0us-gaap_AssetImpairmentCharges
Land
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	118,658,000	118,165,000
Grandstands and buildings
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	439,625,000	435,125,000
Equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	237,867,000	208,966,000
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	51,815,000	47,718,000
Tracks and other improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	142,975,000	121,085,000
Construction in progress
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	15,427,000	15,214,000
Trackside
Property, Plant and Equipment [Line Items]
Depreciation		1,500,000	900,000
Luckity [Member]
Property, Plant and Equipment [Line Items]
Asset impairment loss	$ 3,200,000