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Acquisitions And Investments (Narrative) (Details)
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Oct. 31, 2014
USD ($)
Oct. 31, 2014
USD ($)
Dec. 31, 2014
USD ($)
Sep. 30, 2015
USD ($)
employee
Dec. 31, 2014
USD ($)
Business Acquisition [Line Items]          
Cost investment     $ 1,000,000 $ 1,000,000 $ 1,000,000
Century Bets! Inc. [Member]          
Business Acquisition [Line Items]          
Acquisition costs     $ 100,000    
Century Casinos Europe GmbH [Member] | Mendoza Central Entretenimientos S. A. [Member]          
Business Acquisition [Line Items]          
Ownership interest 7.50% 7.50%      
Acquisition costs         $ 200,000
Period of option to purchase additional equity interest       $ 3  
Additional interest to purchase under option, percentage       50.00%  
Investment in Mendoza Central Entretenmientos S.A. $ 1,000,000 $ 1,000,000      
Number of directors appointed | employee       1  
Century Casinos Europe GmbH [Member] | Century Bets! Inc. [Member]          
Business Acquisition [Line Items]          
Ownership percentage       75.00%  
Number of directors appointed | employee       3  
Rocky Mountain Turf Club [Member] | Century Bets! Inc. [Member]          
Business Acquisition [Line Items]          
Ownership interest       25.00%