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Goodwill And Intangible Assets (Narrative) (Details)
3 Months Ended 12 Months Ended
Jun. 30, 2015
USD ($)
Dec. 31, 2016
USD ($)
item
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Finite-Lived Intangible Assets [Line Items]        
Impairment charges related to goodwill | $   $ 0    
Number of trademarks   2    
Impairment charges related to trademarks | $   $ 0    
Weighted-average period before the next renewal of casino licenses   1 year 6 months    
License impairment charges | $   $ 0 $ 0 $ 198,000
Licenses [Member]        
Finite-Lived Intangible Assets [Line Items]        
Number of casino licenses   3    
License impairment charges | $   $ 0    
AGLC [Member]        
Finite-Lived Intangible Assets [Line Items]        
Number of casino licenses   1    
HRA [Member] | Licenses [Member]        
Finite-Lived Intangible Assets [Line Items]        
Number of casino licenses   1    
CSA [Member] | Licenses [Member]        
Finite-Lived Intangible Assets [Line Items]        
Number of casino licenses   1    
Casinos Poland Ltd [Member]        
Finite-Lived Intangible Assets [Line Items]        
Number of casino licenses   7    
Term of casino licenses, years   6 years    
Cost to renew | $   $ 339,000    
Casinos Poland Ltd [Member] | Sosnowiec Casino License [Member]        
Finite-Lived Intangible Assets [Line Items]        
License impairment charges | $ $ 200,000      
Century Downs Racetrack And Casino [Member] | Licenses [Member]        
Finite-Lived Intangible Assets [Line Items]        
Number of casino licenses   2