Annual report pursuant to Section 13 and 15(d)

Recent Transactions (Schedule Of Disposed Developable Land) (Details)

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Recent Transactions (Schedule Of Disposed Developable Land) (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2018
USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]  
Total Development Costs Incurred $ 457,984
Disposal Group, Not Discontinued Operations [Member]  
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]  
Net Sales Proceeds 46,036
Net Carrying Value 15,097
Gain on Disposition of Developable Land 30,939
1 Lake Street [Member] | Disposal Group, Not Discontinued Operations [Member]  
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]  
Net Sales Proceeds 46,036
Net Carrying Value 15,097
Gain on Disposition of Developable Land 30,939
Total Development Costs Incurred $ 3,000