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Related Party Transactions (Details Textual) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017
Related Party Transaction [Line Items] |  |  |  |  |
Revenues | $ 216,543,000 | $ 109,885,000 | $ 431,332,000 | $ 215,768,000 |
Mr. Sartini [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Due to related parties | 0 |  | 0 |  |
Mr. Sartini [Member] | Maximum [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Reimbursement expense paid | 100,000 | 100,000 | 100,000 | 100,000 |
Due to related parties |  |  |  |  | $ 100,000
Executive Vice President and Chief Legal Officer [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Revenues | $ 300,000 | $ 300,000 | $ 500,000 | $ 500,000 |
Type of Revenue [Extensible List] | us-gaap:CasinoMember | us-gaap:CasinoMember | us-gaap:CasinoMember | us-gaap:CasinoMember |
Gaming expenses | $ 200,000 | $ 300,000 | $ 500,000 | $ 500,000 |
Type of Cost, Good or Service [Extensible List] | us-gaap:CasinoMember | us-gaap:CasinoMember | us-gaap:CasinoMember | us-gaap:CasinoMember |
Lyle A. Berman [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Consulting agreement expiry date | Jul. 31, 2018 |  |  |  |
Lyle A. Berman [Member] | Maximum [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Due to related parties | $ 100,000 |  | $ 100,000 |  | 100,000
Lyle A. Berman [Member] | Maximum [Member] | Selling General and Administrative Expenses [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Consulting agreement expenses, related party | 100,000 | $ 100,000 | $ 100,000 | $ 100,000 |
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] | Mr. Sartini [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Related party transaction, amounts of transaction | 300,000 | 300,000 | $ 800,000 | 600,000 |
Rent expense payable to related party | 0 |  | 0 |  | 100,000
Tavern Leases [Member] | Mr. Sartini [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Related party transaction, amounts of transaction | 200,000 | 300,000 | 300,000 | 500,000 |
Rent expense payable to related party | 0 |  | 0 |  | 0
Office Headquarters Lease [Member] | Mr. Sartini [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Rental income for sublet portion |  | $ 0 |  |  |
Due from related parties | 0 |  | 0 |  | $ 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 |

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