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Description Of Business And Basis Of Presentation (Narrative) (Details) $ in Millions, $ in Millions | 1 Months Ended | 3 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2017 USD ($) | Aug. 31, 2017 item | Mar. 31, 2019 CAD ($) item | Mar. 31, 2019 USD ($) item | Apr. 30, 2018 | Oct. 31, 2014
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |
Number of ship-based casinos |  |  | 9 | 9 |  |
Number of cruise ship owners |  |  | 3 |  |  |
Golden Hospitality Ltd. [Member] |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |
Ownership interest |  |  | 49.00% | 49.00% |  |
Lot Polish Airlines Invesment [Member] | Polish Airports Company [Member] |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |
Owned by noncontrolling interest |  |  | 33.30% | 33.30% |  |
Casinos Poland [Member] |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |
Ownership percentage |  |  | 66.60% | 66.60% |  |
Number of casino licenses operating |  |  | 7 |  |  |
Century Bets! Inc. [Member] | Rocky Mountain Turf Club [Member] |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |
Owned by noncontrolling interest |  |  | 25.00% | 25.00% |  |
Hamilton Properties Ltd. [Member] |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |
Number of slot machines |  | 200 |  |  |  |
Number of table games |  | 17 |  |  |  |
Number of electronic table games |  | 1 |  |  |  |
Loan for purchase of equipment | $ | $ 5.0 |  |  |  |  |
Century Mile [Member] | Multi-Level REC [Member] |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |
Project cost |  |  | $ 61.5 | $ 46.0 |  |
Century Resorts Management GmbH [Member] | Mendoza Central Entretenimientos S. A. [Member] |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |
Ownership interest |  |  | 7.50% | 7.50% |  | 7.50%
Century Resorts Management GmbH [Member] | Percentage Of Century Downs Racetrack Owned By Century Casinos Europe [Member] |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |
Ownership percentage |  |  | 75.00% | 75.00% |  |
Century Resorts Management GmbH [Member] | Century Bets! Inc. [Member] |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |
Ownership percentage |  |  | 75.00% | 75.00% |  |
Golden Hospitality Ltd. [Member] | Century Resorts Management [Member] |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |
Ownership percentage |  |  | 51.00% | 51.00% | 51.00% |
Century Downs Racetrack And Casino [Member] |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |
Ownership percentage |  |  | 75.00% | 75.00% |  |
Century Downs Racetrack And Casino [Member] | Unaffiliated Shareholders [Member] |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |
Owned by noncontrolling interest |  |  | 25.00% | 25.00% |  |
Minh Chau Ltd. [Member] | Golden Hospitality Ltd. [Member] | Golden Hospitality Ltd. [Member] |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |
Ownership percentage |  |  | 9.21% | 9.21% |  |
Minh Chau Ltd. [Member] | Golden Hospitality Ltd. [Member] | Future Invesment [Member] |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |
Ownership percentage |  |  | 51.00% | 51.00% |  |
Minh Chau Ltd. [Member] | Golden Hospitality Ltd. [Member] | Option to Purchase [Member] |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |
Ownership percentage |  |  | 70.00% | 70.00% |  |

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