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Property And Equipment (Construction-In-Progress Balance) (Details) | 3 Months Ended
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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.

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- Definition Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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- Definition Amount of interest capitalized during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 + Details
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- Definition Amount capitalized of allowance for funds used during construction. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 835 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501569&loc=d3e55921-110430 + Details
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