Property And Equipment (Construction-In-Progress Balance) (Details) - USD ($) $ in Thousands		3 Months Ended	9 Months Ended
		Sep. 30, 2019	Sep. 30, 2019
Property, Plant and Equipment [Line Items]
Balance			$ 3,478
Balance		$ 7,032	7,032
Capitalized interest		2,200	4,900
Operating And Investing Properties [Member]
Property, Plant and Equipment [Line Items]
Balance			64,011
Additions during the period	[1]		35,896
Completed during the period			(10,309)
Foreign currency translation			(566)
Balance		89,032	89,032
Operating And Investing Properties [Member] | Union Square Development [Member]
Property, Plant and Equipment [Line Items]
Balance			55,634
Additions during the period	[1]		21,098
Completed during the period
Foreign currency translation
Balance		76,732	76,732
Operating And Investing Properties [Member] | Courtenay Central Development [Member]
Property, Plant and Equipment [Line Items]
Balance			5,571
Additions during the period	[1]		611
Completed during the period			(40)
Foreign currency translation			(411)
Balance		5,731	5,731
Operating And Investing Properties [Member] | Cinema Developments And Improvements [Member]
Property, Plant and Equipment [Line Items]
Balance			1,664
Additions during the period	[1]		13,470
Completed during the period			(9,931)
Foreign currency translation			(75)
Balance		5,128	5,128
Operating And Investing Properties [Member] | Other Real Estate Projects [Member]
Property, Plant and Equipment [Line Items]
Balance			1,142
Additions during the period	[1]		717
Completed during the period			(338)
Foreign currency translation			(80)
Balance		$ 1,441	$ 1,441

[1] Includes capitalized interest of $2.2 million and $4.9 million for the quarter and nine months ended September 30, 2019.