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 |