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Cost Investment (Narrative) (Details) $ in Thousands |  | 3 Months Ended | 36 Months Ended |
--- | --- | --- | --- | ---
Oct. 31, 2014 USD ($) | Mar. 31, 2018 USD ($) employee | Oct. 31, 2017 | Dec. 31, 2017 USD ($)
Business Acquisition [Line Items] |  |  |  |
Cost investment |  | $ 1,000 |  | $ 1,000
Century Casinos Europe GmbH [Member] | Mendoza Central Entretenimientos S. A. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Ownership interest | 7.50% | 7.50% |  |
Period of option to purchase additional equity interest |  |  | 3 years |
Additional interest to purchase under option, percentage |  |  | 50.00% |
Investment in Mendoza Central Entretenmientos S.A. | $ 1,000 |  |  |
Number of directors appointed | employee |  | 1 |  |

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