Commitments and Contingencies (Details Textual)	12 Months Ended				43 Months Ended
	Dec. 31, 2016 USD ($) a Parcel	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 28, 2014 USD ($)	Dec. 31, 2016 USD ($) a $ / Room $ / RoundofGolf
Commitments And Contingencies [Line Items]
Operating Leases, Rent Expense	$ 55,061,000	$ 21,759,000		$ 339,000
Gaming Expenses	248,075,000	98,268,000		25,031,000
Other Operating Expenses	5,566,000	2,260,000		1,419,000
Participation and Revenue Share Agreements [Member]
Commitments And Contingencies [Line Items]
Gaming Expenses	128,100,000	41,700,000		0
Participation and Revenue Share Agreements [Member] | Related Party Transaction, Revenue Share and Participation Agreement [Member]
Commitments And Contingencies [Line Items]
Gaming Expenses	$ 2,100,000	700,000		0
Revenue Share Agreements [Member]
Commitments And Contingencies [Line Items]
Other Operating Expenses		0	$ 0
Maximum [Member]
Commitments And Contingencies [Line Items]
Operating Leases Renewal Term	15 years
Original Terms of Current Branded Tavern Location Leases Range	15 years
Capital Leases Term	4 years
Maximum [Member] | Revenue Share Agreements [Member]
Commitments And Contingencies [Line Items]
Other Operating Expenses	$ 1,000,000
Minimum [Member]
Commitments And Contingencies [Line Items]
Operating Leases Renewal Term	1 year
Original Terms of Current Branded Tavern Location Leases Range	1 year
Office Headquarters [Member]
Commitments And Contingencies [Line Items]
Lease expiration date	2025-07
Office Headquarters [Member] | Maximum [Member]
Commitments And Contingencies [Line Items]
Rental Income Related to Sublease	$ 100,000	100,000
Pahrump, Nevada [Member] | Gold Town Casino [Member]
Commitments And Contingencies [Line Items]
Number of Leased Parcels of Land | Parcel	4
Area of Land | a	9				9
Pahrump, Nevada [Member] | Gold Town Casino [Member] | Sublease to Unrelated Third Party [Member]
Commitments And Contingencies [Line Items]
Area of Land | a	2				2
Pahrump, Nevada [Member] | Gold Town Casino [Member] | Sublease to Unrelated Third Party [Member] | Maximum [Member]
Commitments And Contingencies [Line Items]
Rental Income Related to Sublease	$ 100,000	100,000
Mr. Sartini [Member]
Commitments And Contingencies [Line Items]
Liability Contingency, Estimated Severance Payments	8,100				$ 8,100
Stephen Arcana [Member]
Commitments And Contingencies [Line Items]
Liability Contingency, Estimated Severance Payments	2,900				2,900
Charles H. Protell [Member]
Commitments And Contingencies [Line Items]
Liability Contingency, Estimated Severance Payments	3,500				3,500
Sean T. Higgins [Member]
Commitments And Contingencies [Line Items]
Liability Contingency, Estimated Severance Payments	2,100				2,100
Blake L. Sartini II [Member]
Commitments And Contingencies [Line Items]
Liability Contingency, Estimated Severance Payments	1,200				1,200
Gary A. Vecchiarelli [Member]
Commitments And Contingencies [Line Items]
Liability Contingency, Estimated Severance Payments	$ 400				$ 400
Rocky Gap State Park [Member] | Maryland DNR [Member]
Commitments And Contingencies [Line Items]
Area of the Property | a	270				270
Operating Leases Renewal Term	20 years
Lease expiration year	2052
Operating Leases, Rent Due					$ 275,000
Operating Leases, Revenue Percent					0.90%
Operating Leases, Rent Expense	$ 300,000	300,000		300,000
Rocky Gap State Park [Member] | Maryland DNR [Member] | Per Room Per Night [Member]
Commitments And Contingencies [Line Items]
Operating Leases, Surcharge Revenue, Per Unit | $ / Room					3.00
Rocky Gap State Park [Member] | Maryland DNR [Member] | Per Round Of Golf [Member]
Commitments And Contingencies [Line Items]
Operating Leases, Surcharge Revenue, Per Unit | $ / RoundofGolf					1.00
Rocky Gap State Park [Member] | Maryland DNR [Member] | Surcharge Revenue [Member]
Commitments And Contingencies [Line Items]
Operating Lease, Base Revenue					$ 150,000
Operating Leases, Rent Expense	$ 100,000	$ 100,000		$ 100,000	$ 150,000