Property and Equipment - Summary of Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 1,968,827	$ 985,202
Less—Accumulated depreciation and amortization	(466,010)	(372,860)
Property and equipment, net	1,502,817	612,342
Land and Improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	284,374	54,604
Building and Other Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	1,187,642	628,390
Riverboat
Property Plant And Equipment [Line Items]
Property and equipment, gross	61,091	40,148
Furniture, Fixtures and Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	420,399	251,504
Furniture, Fixtures and Equipment Held Under Capital Leases
Property Plant And Equipment [Line Items]
Property and equipment, gross	870	3,571
Construction in Progress
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 14,451	$ 6,985

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 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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