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Investments (Narrative) (Details) $ in Thousands |  |  | 6 Months Ended | 36 Months Ended |
--- | --- | --- | --- | --- | ---
Apr. 25, 2018 USD ($) | Oct. 31, 2014 USD ($) | Jun. 30, 2018 USD ($) employee ft | Oct. 31, 2017 | Dec. 31, 2017 USD ($)
Business Acquisition [Line Items] |  |  |  |  |
Equity investment |  |  | $ 444 |  |
Cost investment |  |  | 1,000 |  | $ 1,000
Minh Chau Ltd. [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Equity investment |  |  | 3,600 |  |
Century Casinos [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Equity investment |  |  | $ 1,800 |  |
Century Casinos Europe GmbH [Member] | Mendoza Central Entretenimientos S. A. [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
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 |  |
Golden Hospitality Ltd. [Member] | Century Resorts Management [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Ownership percentage |  |  | 51.00% |  |
Total consideration | $ 600 |  |  |  |
Golden Hospitality Ltd. [Member] | Minh Chau Ltd. [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Ownership interest |  |  | 6.36% |  |
Period of option to purchase additional equity interest |  |  | 3 years |  |
Equity investment | $ 400 |  |  |  |
Feet from border station | ft |  |  | 300 |  |
Golden Hospitality Ltd. [Member] | Minh Chau Ltd. [Member] | Future Invesment [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Ownership percentage |  |  | 51.00% |  |
Equity investment |  |  | $ 3,600 |  |
Golden Hospitality Ltd. [Member] | Minh Chau Ltd. [Member] | Option to Purchase [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Ownership percentage |  |  | 70.00% |  |
Additional interest to purchase under option, percentage |  |  | 19.00% |  |
Golden Hospitality Ltd. [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Ownership interest |  |  | 49.00% |  |
Golden Hospitality Ltd. [Member] | Minh Chau Ltd. [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Ownership interest |  |  | 6.36% |  |
Mendoza Central Entretenimientos S. A. [Member] | Century Casinos Europe GmbH [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Ownership interest |  | 7.50% | 7.50% |  |

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