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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