Revenue Recognition (Disaggregation Of Company's Revenue From Contracts With Customers) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Net operating revenue	$ 95,706	$ 52,935	$ 219,466	$ 150,990
Corporate And Other [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	143	1,313	1,286	4,343
United States [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	62,647	9,199	139,908	26,073
Canada [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	16,577	22,063	37,479	60,353
Poland [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	16,339	20,360	40,793	60,221
Gaming [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	78,289	42,019	182,503	121,345
Gaming [Member] | Corporate And Other [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	25	1,023	821	3,253
Gaming [Member] | United States [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	52,163	7,637	119,796	21,815
Gaming [Member] | Canada [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	9,961	13,252	22,243	36,834
Gaming [Member] | Poland [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	16,140	20,107	39,643	59,443
Hotel [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	1,981	562	4,273	1,502
Hotel [Member] | United States [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	1,981	443	4,190	1,137
Hotel [Member] | Canada [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		119	83	365
Food And Beverage [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	4,633	5,425	12,336	14,230
Food And Beverage [Member] | Corporate And Other [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		167	105	623
Food And Beverage [Member] | United States [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	2,747	1,022	7,273	2,833
Food And Beverage [Member] | Canada [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	1,712	4,021	4,526	10,118
Food And Beverage [Member] | Poland [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	174	215	432	656
Other [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	10,803	4,929	20,354	13,913
Other [Member] | Corporate And Other [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	118	123	360	467
Other [Member] | United States [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	5,756	97	8,649	288
Other [Member] | Canada [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	4,904	4,671	10,627	13,036
Other [Member] | Poland [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	$ 25	$ 38	$ 718	$ 122