Goodwill And Intangible Assets (Summary Of Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Goodwill [Line Items]
Beginning balance	$ 19,445	$ 20,276
Change in goodwill due to a purchase of business	7,126
Foreign currency translation adjustment	(123)	(831)
Ending balance	26,448	19,445
Cinema [Member]
Goodwill [Line Items]
Beginning balance	14,221	15,052
Change in goodwill due to a purchase of business	7,126
Foreign currency translation adjustment	(123)	(831)
Ending balance	21,224	14,221
Real Estate [Member]
Goodwill [Line Items]
Beginning balance	5,224	5,224
Ending balance	$ 5,224	$ 5,224

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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