Property And Equipment (Schedule of property and Equipment) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 217,246	$ 200,453
Less: accumulated depreciation	(64,468)	(59,690)
Property and equipment, net	152,778	140,763	$ 131,582
Land [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	50,300	48,274
Buildings And Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	110,733	105,048
Gaming Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	24,212	23,445
Furniture And Non-Gaming Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	20,501	18,728
Capital Leases [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,628	1,379
Capital Projects In Process [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 9,872	$ 3,579