Goodwill And Intangible Assets (Changes in Carrying Amount of Licenses) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Goodwill [Line Items]
Balance at begininng of period	$ 667
Less: accumulated amortization	(1,434)	$ (1,362)
Balance at end of period	1,558	667
Casinos Poland Ltd [Member]
Goodwill [Line Items]
Balance at begininng of period	667	730
New casino licenses	1,127	339
Less: accumulated amortization	385	368
Effect of foreign currency translation	149	(34)
Balance at end of period	1,558	667
Century Downs Racetrack And Casino [Member]
Goodwill [Line Items]
Balance at begininng of period	2,369	2,298
New casino licenses	0	0
Effect of foreign currency translation	167	71
Balance at end of period	2,536	2,369
Century Casino St. Albert [Member]
Goodwill [Line Items]
Balance at begininng of period	9,104	0
New casino licenses	0	9,318
Effect of foreign currency translation	640	(214)
Balance at end of period	9,744	9,104
Saw Close Casino Ltd. [Member]
Goodwill [Line Items]
Balance at begininng of period	0	0
New casino licenses	1,160	0
Effect of foreign currency translation	67	0
Balance at end of period	$ 1,227	$ 0