Property and Equipment (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	$ 324,547,000	$ 283,886,000
Property, Plant and Equipment, Gross	949,963,000	740,025,000
Property, Plant and Equipment, Net	625,416,000	456,139,000
Depreciation, Depletion and Amortization, Nonproduction	56,921,000	28,643,000	$ 17,031,000
Capital Expenditure reimbursed by West Virginia Racing Commission	1,266,000	799,000
Mountaineer
Property, Plant and Equipment [Line Items]
Capital expenditure submitted for reimbursement from the West Virginia Racing Commission	3,900,000
Capital Expenditure reimbursed by West Virginia Racing Commission	1,300,000
Amount of qualified capital expenditure reiumbursed by West Virginia lottery commission	1
Amount of qualified capital expenditure submitted for reiumbursement by West Viriginia lottery commission	2
Modernization Fund Grants Eligibility Fund	3,000,000
Land and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	54,633,000	40,170,000
Building and Other Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 619,614,000	460,662,000
Building and Other Leasehold Improvements [Member] | Minimum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Building and Other Leasehold Improvements [Member] | Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	45 years
Riverboat [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 39,027,000	39,023,000
Property, Plant and Equipment, Useful Life	25 years
Furniture, fixtures and equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 229,798,000	193,448,000
Furniture, fixtures and equipment [Member] | Minimum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Furniture, fixtures and equipment [Member] | Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	15 years
Furniture, fixtures and equipment held under capital leases [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 4,199,000	3,592,000
Furniture, fixtures and equipment held under capital leases [Member] | Minimum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Furniture, fixtures and equipment held under capital leases [Member] | Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	15 years
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 2,692,000	3,130,000
Assets acquired under capital lease [Member]
Property, Plant and Equipment [Line Items]
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	$ 3,300,000	$ 3,400,000