Significant Accounting Policies (Disaggregation of Company Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Net operating revenue	$ 43,564	$ 41,048	$ 123,834	$ 114,775
Corporate and Other [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	1,774	1,174	3,907	3,426
Canada [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	15,683	15,285	45,690	42,484
United States [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	9,360	9,039	25,542	24,482
Poland [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	16,747	15,550	48,695	44,383
Gaming [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	35,983	36,914	102,595	102,814
Gaming [Member] | Corporate and Other [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	1,462	984	3,339	2,419
Gaming [Member] | Canada [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	10,337	10,764	30,190	29,535
Gaming [Member] | United States [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	7,615	9,507	21,056	26,294
Gaming [Member] | Poland [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	16,569	15,659	48,010	44,566
Hotel [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	575	560	1,534	1,491
Hotel [Member] | Canada [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	129	139	396	409
Hotel [Member] | United States [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	446	421	1,138	1,082
Food And Beverage [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	4,290	3,868	11,630	10,622
Food And Beverage [Member] | Corporate and Other [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	200		303
Food And Beverage [Member] | Canada [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	2,691	2,557	7,713	7,232
Food And Beverage [Member] | United States [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	1,194	1,139	3,063	2,877
Food And Beverage [Member] | Poland [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	205	172	551	513
Other [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	2,716	2,449	8,075	7,604
Other [Member] | Corporate and Other [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	112	199	265	1,044
Other [Member] | Canada [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	2,526	2,146	7,391	6,182
Other [Member] | United States [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	105	79	285	252
Other [Member] | Poland [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue	$ (27)	25	$ 134	126
Promotional Allowances [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue		(2,743)		(7,756)
Promotional Allowances [Member] | Corporate and Other [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue		(9)		(37)
Promotional Allowances [Member] | Canada [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue		(321)		(874)
Promotional Allowances [Member] | United States [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue		(2,107)		(6,023)
Promotional Allowances [Member] | Poland [Member]
Disaggregation of Revenue [Line Items]
Net operating revenue		$ (306)		$ (822)