Goodwill And Intangible Assets (Summary Of Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Goodwill [Line Items]
Beginning balance	$ 26,448	$ 19,445
Change in goodwill due to purchase of business	120	7,126
Foreign currency translation adjustment	1,548	(123)
Ending balance	28,116	26,448
Cinema [Member]
Goodwill [Line Items]
Beginning balance	21,224	14,221
Change in goodwill due to purchase of business	120	7,126
Foreign currency translation adjustment	1,548	(123)
Ending balance	22,892	21,224
Real Estate [Member]
Goodwill [Line Items]
Beginning balance	5,224	5,224
Ending balance	$ 5,224	$ 5,224