Property And Equipment (Construction-In-Progress Balance) (Details) - USD ($) $ in Thousands		3 Months Ended	6 Months Ended
		Jun. 30, 2020	Jun. 30, 2020
Property, Plant and Equipment [Line Items]
Balance			$ 5,484
Balance		$ 10,689	10,689
Capitalized interest		800	1,700
Operating And Investing Properties [Member]
Property, Plant and Equipment [Line Items]
Balance			93,162
Additions during the period	[1]		11,534
Completed during the period			(1,608)
Foreign currency translation			(260)
Balance		102,828	102,828
Operating And Investing Properties [Member] | Union Square Development [Member]
Property, Plant and Equipment [Line Items]
Balance			81,934
Additions during the period	[1]		4,468
Balance		86,402	86,402
Operating And Investing Properties [Member] | Courtenay Central Development [Member]
Property, Plant and Equipment [Line Items]
Balance			6,364
Additions during the period	[1]		419
Foreign currency translation			(272)
Balance		6,511	6,511
Operating And Investing Properties [Member] | Cinema Developments And Improvements [Member]
Property, Plant and Equipment [Line Items]
Balance			3,032
Additions during the period	[1]		5,646
Completed during the period			(1,071)
Foreign currency translation			46
Balance		7,653	7,653
Operating And Investing Properties [Member] | Other Real Estate Projects [Member]
Property, Plant and Equipment [Line Items]
Balance			1,832
Additions during the period	[1]		1,001
Completed during the period			(537)
Foreign currency translation			(34)
Balance		$ 2,262	$ 2,262

[1] Includes capitalized interest of $0.8 million and $1.7 million for the quarter and six months ended June 30, 2020.