Revenue Recognition (Disaggregation Of Company's Revenue From Contracts With Customers) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Net operating revenue	$ 36,103	$ 52,445	$ 123,760	$ 98,057
Corporate And Other [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	162	1,541	1,143	3,035
United States [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	23,832	8,809	77,262	16,874
Canada [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	4,719	21,988	20,902	38,289
Poland [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	7,390	20,107	24,453	39,859
Gaming [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	29,922	41,986	104,215	79,326
Gaming [Member] | Corporate And Other [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	2	1,081	795	2,230
Gaming [Member] | United States [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	21,095	7,381	67,631	14,179
Gaming [Member] | Canada [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	2,077	13,649	12,286	23,582
Gaming [Member] | Poland [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	6,748	19,875	23,503	39,335
Hotel [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	476	494	2,292	940
Hotel [Member] | United States [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	476	373	2,209	694
Hotel [Member] | Canada [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		121	83	246
Food And Beverage [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	1,151	5,054	7,703	8,805
Food And Beverage [Member] | Corporate And Other [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		235	105	456
Food And Beverage [Member] | United States [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	774	949	4,528	1,811
Food And Beverage [Member] | Canada [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	313	3,656	2,812	6,097
Food And Beverage [Member] | Poland [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	64	214	258	441
Other [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	4,554	4,911	9,550	8,986
Other [Member] | Corporate And Other [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	160	225	243	349
Other [Member] | United States [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	1,487	106	2,894	190
Other [Member] | Canada [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	2,329	4,562	5,721	8,364
Other [Member] | Poland [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	$ 578	$ 18	$ 692	$ 83