Property And Equipment (Construction-In-Progress Balance) (Details)	3 Months Ended
	Mar. 31, 2018 USD ($)
Property, Plant and Equipment [Line Items]
Balance	$ 26,000,000
Balance	29,477,000
Capitalized interest charges	335,000
Operating And Investing Properties [Member]
Property, Plant and Equipment [Line Items]
Balance	60,329,000
Additions during the period	12,385,000	[1]
Completed during the period	(3,515,000)
Foreign currency translation	39,000
Balance	69,238,000
Operating And Investing Properties [Member] | Union Square Development [Member]
Property, Plant and Equipment [Line Items]
Balance	29,223,000
Additions during the period	5,486,000	[1]
Completed during the period
Foreign currency translation
Balance	34,709,000
Operating And Investing Properties [Member] | Newmarket Property Development [Member]
Property, Plant and Equipment [Line Items]
Balance	370,000
Additions during the period	756,000	[1]
Completed during the period	(636,000)
Foreign currency translation	(8,000)
Balance	482,000
Operating And Investing Properties [Member] | Courtenay Central Development [Member]
Property, Plant and Equipment [Line Items]
Balance	4,676,000
Completed during the period
Foreign currency translation	91,000
Balance	4,767,000
Operating And Investing Properties [Member] | Cinema Developments And Improvements [Member]
Property, Plant and Equipment [Line Items]
Balance	19,015,000
Additions during the period	5,123,000	[1]
Completed during the period	(2,879,000)
Foreign currency translation	54,000
Balance	21,313,000
Operating And Investing Properties [Member] | Other Real Estate Projects [Member]
Property, Plant and Equipment [Line Items]
Balance	7,045,000
Additions during the period	1,020,000	[1]
Completed during the period
Foreign currency translation	(98,000)
Balance	$ 7,967,000

[1] Includes capitalized interest of $335,000 for the quarter ended March 31, 2018.