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Related Party Transactions (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Related Party Transaction [Line Items]
Stock options granted in period			977,570	1,128,070
Grant of options exercise price			$ 7.36	$ 5.73
Net revenues	$ 92,215,000	$ 89,157,000	$ 278,386,000	$ 255,966,000
Gaming Expenses	65,364,000	65,261,000	$ 197,175,000	184,293,000
Maximum [Member]
Related Party Transaction [Line Items]
Lease for tavern locations remaining terms range			15 years
Minimum [Member]
Related Party Transaction [Line Items]
Lease for tavern locations remaining terms range			1 year
Mr. Sartini [Member]
Related Party Transaction [Line Items]
Reimbursement expense paid			$ 100,000
Mr. Sartini [Member] | Maximum [Member]
Related Party Transaction [Line Items]
Reimbursement expense paid	100,000	100,000		100,000
Due to related parties	$ 0		0
Son of Chief Executive Officer [Member]
Related Party Transaction [Line Items]
Related party transaction, amounts of transaction			$ 267,000
Percentage of eligible annual bonus on base salary	50.00%		50.00%
Stock options granted in period			75,000
Grant of options exercise price			$ 13.50
Stock options vesting period			4 years
Executive Vice President and Chief Legal Officer [Member]
Related Party Transaction [Line Items]
Due to related parties	$ 0		$ 0
Net revenues	300,000	300,000	900,000	600,000
Gaming Expenses	300,000	200,000	800,000	500,000
Executive Vice President and Chief Legal Officer [Member] | Maximum [Member]
Related Party Transaction [Line Items]
Due from related parties	0		0
Immediate Family Member of Management or Principal Owner [Member]
Related Party Transaction [Line Items]
Net revenues		300,000		1,100,000
Gaming Expenses		200,000		1,000,000
Director [Member]
Related Party Transaction [Line Items]
Net revenues				100,000
Gaming Expenses				100,000
Lyle A. Berman [Member]
Related Party Transaction [Line Items]
Due to related parties	0		0
Annual director fees			200,000
Lyle A. Berman [Member] | Maximum [Member]
Related Party Transaction [Line Items]
Consulting agreement expenses, related party	100,000	100,000	200,000	200,000
Timothy J. Cope [Member]
Related Party Transaction [Line Items]
Consulting agreement expenses, related party				100,000
Payments related to consulting agreements			$ 140,000
Office Headquarters and Tavern Lease [Member] | Maximum [Member]
Related Party Transaction [Line Items]
Lease for tavern locations remaining terms range			10 years
Office Headquarters and Tavern Lease [Member] | Mr. Sartini [Member]
Related Party Transaction [Line Items]
Percentage of counterparty ownership by related party			33.00%
Office Headquarters and Tavern Lease [Member] | Mr. Sartini's Immediate Family Members [Member]
Related Party Transaction [Line Items]
Percentage of counterparty ownership by related party			5.00%
Office Headquarters and Tavern Lease [Member] | Stephen Arcana [Member]
Related Party Transaction [Line Items]
Percentage of counterparty ownership by related party			3.00%
Office Headquarters [Member]
Related Party Transaction [Line Items]
Lease expiration date			Jul. 31, 2025
Office Headquarters [Member] | Mr. Sartini [Member]
Related Party Transaction [Line Items]
Related party transaction, amounts of transaction	300,000	300,000	$ 900,000	800,000
Rent expense payable to related party	0		0
Tavern Leases [Member] | Mr. Sartini [Member]
Related Party Transaction [Line Items]
Related party transaction, amounts of transaction	200,000	300,000	700,000	1,000,000
Rent expense payable to related party	0		0
Office Headquarters Lease [Member] | Mr. Sartini [Member]
Related Party Transaction [Line Items]
Rental income for sublet portion	$ 0
Office Headquarters Lease [Member] | Mr. Sartini [Member] | Maximum [Member]
Related Party Transaction [Line Items]
Rental income for sublet portion		$ 100,000	100,000	$ 100,000
Base Salary [Member] | Son of Chief Executive Officer [Member]
Related Party Transaction [Line Items]
Related party transaction, amounts of transaction			$ 375,000

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Payments related to consulting agreements.

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Represents the ownership percentage by a related party of the counterparty that participates in a financial transaction.

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Reimbursement expense paid.

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The annual target annual bonus that a related party is eligible for within the next twelve months of the reporting period.

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Rent expense payable to related party.

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- Definition

This element represents the cost of generating revenues from a hotel's, including cruise lines, gaming operations; likewise, such revenues may be derived from gaming operations that also are hoteliers.

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Revenues generated by casino operations. Also includes revenues generated by and derived from a hotel's, including cruise lines, gaming operations; likewise, such revenues may be derived from gaming operations that also are hoteliers.

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For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.

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Carrying amount as of the balance sheet date of obligations due all related parties.

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- Definition

Date which lease or group of leases is set to expire, in CCYY-MM-DD format.

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Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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The amount of revenue recognized for the period under subleasing arrangements.

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A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer.

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Amount of transactions with related party during the financial reporting period.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Gross number of share options (or share units) granted during the period.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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