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Description Of Business And Basis Of Presentation (Narrative) (Details) | 1 Months Ended | 3 Months Ended | 24 Months Ended |  |
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Apr. 30, 2018 item | Mar. 31, 2018 USD ($) ft² item | Mar. 31, 2017 USD ($) | May 31, 2017 USD ($) | Oct. 31, 2014 | Dec. 31, 2013
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |
Number of majority ownership interests held throughout Poland |  | 4 |  |  |  |
Number of ship-based casinos |  | 14 |  |  |  |
Number of cruise ship owners |  | 4 |  |  |  |
Adjusted EBITDA | $ |  | $ 6,562,000 | $ 6,711,000 |  |  |
Percentage Of CBS Owned By CCE [Member] |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |
Ownership percentage |  | 75.00% |  |  |  |
Lot Polish Airlines Invesment [Member] |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |
Owned by noncontrolling interest |  | 33.30% |  |  |  | 33.30%
Casinos Poland Ltd [Member] |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |
Ownership percentage |  | 66.60% |  |  |  |
Number of casino licenses owned |  | 6 |  |  |  |
Number of casinos expected to begin operations |  | 2 |  |  |  |
Casinos Poland Ltd [Member] | Subsequent Event [Member] |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |
Number of casinos closed | 1 |  |  |  |  |
Century Bets! Inc. [Member] |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |
Owned by noncontrolling interest |  | 25.00% |  |  |  |
Saw Close Casino Ltd. [Member] |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |
Number of slot machines |  | 35 |  |  |  |
Number of table games |  | 18 |  |  |  |
Number of automated live table games |  | 24 |  |  |  |
Square footage of casino facility | ft² |  | 15,000 |  |  |  |
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 | $ |  | $ 5,000,000 |  |  |  |
Century Casinos Europe 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% |  |  |  |
Oceania Cruises [Member] |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |
Term of consulting agreement |  |  |  | 2 years |  |
Consulting Fee | $ |  |  |  | $ 2,000,000 |  |
Consulting Fee payable per quarter | $ |  |  |  | $ 250,000 |  |
Century Downs Racetrack And Casino [Member] |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |
Ownership percentage |  | 75.00% |  |  |  |
Owned by noncontrolling interest |  | 25.00% |  |  |  |
Mendoza Central Entretenimientos S. A. [Member] | Century Casinos Europe GmbH [Member] |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |
Ownership interest |  | 7.50% |  |  | 7.50% |

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