Significant Accounting Policies (Schedule Of Promotional Allowances) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Total promotional allowances	$ 1,164	$ 1,096	$ 1,063
Hotel [Member]
Total promotional allowances	47	49	59
Food And Beverage [Member]
Total promotional allowances	$ 1,117	$ 1,047	$ 1,004