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GENERAL INFORMATION - Description of Business (Details) $ in Thousands |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Nov. 18, 2020 USD ($) shares | Mar. 28, 2019 USD ($) | Dec. 31, 2020 USD ($) ft² tableGame slotMachine segment diningVenue videoLotteryTerminal bar-Dining room hotelTower site studioGamingPosition renewalTerm parkingGarage parkingSpace | Jul. 14, 2015 videoLotteryTerminal
Business Acquisition [Line Items] |  |  |  |
Number of off-track betting sites | site |  |  | 13 |
Capital expenditures period |  |  | 5 years |
Number of reportable segments | segment |  |  | 4 |
Dover Downs |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Number of table games |  |  | 33 |
Number of poker tables |  |  | 4 |
Number of hotel rooms | room |  |  | 500 |
Number of slot machines | slotMachine |  |  | 2,060 |
Convertible common stock receivable amount |  | 0.0899 |  |
Cash paid to acquire business | $ |  | $ 29,096 |  |
Black Hawk |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Number of table games |  |  | 16 |
Number of poker tables |  |  | 17 |
Number of slot machines | slotMachine |  |  | 569 |
Amount of gaming and casino space | ft² |  |  | 34,632 |
Number of restaurants | renewalTerm |  |  | 4 |
Number of parking garages | parkingGarage |  |  | 1 |
Number of parking spaces | parkingSpace |  |  | 700 |
Casino KC |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Number of table games |  |  | 13 |
Number of slot machines | slotMachine |  |  | 887 |
Amount of gaming and casino space | ft² |  |  | 39,788 |
Number of dining venues | diningVenue |  |  | 2 |
Estimated total cost of project | $ |  |  | $ 40,000 |
Casino Vicksburg |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Number of table games |  |  | 8 |
Number of hotel rooms | room |  |  | 89 |
Number of slot machines | slotMachine |  |  | 499 |
Amount of gaming and casino space | ft² |  |  | 32,608 |
Number of dining venues | diningVenue |  |  | 3 |
Bally’s Atlantic City |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Number of table games |  |  | 93 |
Number of hotel rooms | room |  |  | 1,214 |
Number of slot machines | slotMachine |  |  | 1,481 |
Number of dining venues | diningVenue |  |  | 4 |
Estimated total cost of project | $ | $ 90,000 |  | $ 90,000 |
Capital expenditures period |  |  | 5 years |
Area of lease | ft² |  |  | 83,569 |
Number of bars | bar-Dining |  |  | 1 |
Amount of meeting space | ft² |  |  | 80,000 |
Number of meeting rooms | room |  |  | 28 |
Area of ballroom | ft² |  |  | 12,000 |
Eldorado Resort Casino Shreveport |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Number of table games |  |  | 46 |
Number of poker tables |  |  | 8 |
Number of hotel rooms | room |  |  | 403 |
Number of slot machines | slotMachine |  |  | 1,382 |
Amount of gaming and casino space | ft² |  |  | 49,916 |
Number of dining venues | diningVenue |  |  | 4 |
Number of bars | bar-Dining |  |  | 2 |
Area of convention space | ft² |  |  | 6,000 |
Bet.Works |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Cash paid to acquire business | $ | $ 62,500 |  |  |
Common stock issued (in shares) | shares | 2,528,194 |  |  |
Category 4 licensed casino, Centre County, Pennsylvania |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Number of table games |  |  | 30 |
Number of slot machines | slotMachine |  |  | 750 |
Estimated total cost of project | $ |  |  | $ 120,000 |
Percentage of economic interest |  |  | 100.00% |
Hard Rock Biloxi |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Number of table games |  |  | 55 |
Number of slot machines | slotMachine |  |  | 1,015 |
Number of hotel towers | hotelTower |  |  | 2 |
Number of guest rooms and suites | room |  |  | 479 |
Newport Grand Casino |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Number of VLTs | videoLotteryTerminal |  |  |  | 1,100
Share of VLT revenue entitled to |  |  |  | 28.00%
Twin River Casino Hotel |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Maximum amount of authorized VLTs | videoLotteryTerminal |  |  | 4,752 |
Number of VLTs | videoLotteryTerminal |  |  | 4,067 |
Number of table games |  |  | 90 |
Number of poker tables |  |  | 23 |
Number of stadium gaming positions | studioGamingPosition |  |  | 36 |
Number of hotel rooms | room |  |  | 136 |
Tiverton Casino Hotel |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Number of VLTs | videoLotteryTerminal |  |  | 1,000 |
Number of table games |  |  | 32 |
Number of stadium gaming positions | studioGamingPosition |  |  | 18 |
Number of hotel rooms | room |  |  | 83 |

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