Goodwill And Intangible Assets (Summary Of Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017		Dec. 31, 2016
Goodwill [Line Items]
Beginning balance	$ 19,828	[1]	$ 19,715
Foreign currency translation adjustment	448		113
Ending balance	20,276		19,828	[1]
Cinema [Member]
Goodwill [Line Items]
Beginning balance	14,604		14,491
Foreign currency translation adjustment	448		113
Ending balance	15,052		14,604
Real Estate [Member]
Goodwill [Line Items]
Beginning balance	5,224		5,224
Foreign currency translation adjustment
Ending balance	$ 5,224		$ 5,224

[1] Certain prior year balances have been reclassified to conform to the 2017 presentation (see Note 2 - Summary of Significant Accounting Policies - Reclassifications).