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Promotional Allowances (Schedule Of Promotional Allowances) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Promotional Allowances [Line Items]          
Total promotional allowances $ 284 $ 258 $ 563 $ 523  
Outstanding Balance Of Promotional Allowance Liability 700   700   $ 700
Hotel [Member]          
Promotional Allowances [Line Items]          
Total promotional allowances 13 13 25 29  
Food And Beverage [Member]          
Promotional Allowances [Line Items]          
Total promotional allowances $ 271 $ 245 $ 538 $ 494