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Investments In Joint Ventures (Narrative) (Details) | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Feb. 28, 2014 USD ($) | Mar. 31, 2014 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
Number of joint ventures accounted for under equity method investments |  |  | 3 |  | 2
Equity method investment ownership percentage |  |  |  | 31.30% | 20.00%
Maximum guaranteed amount of loans utilized for construction and development activities for joint ventures |  |  | $ 0 |  |
Fees earned for property and asset management, construction, development, and other services to joint ventures |  |  | 5,300,000 | $ 5,800,000 | $ 8,800,000
Maximum Investments by Formed Unconsolidated Joint Venture |  |  | $ 450,000,000 |  |
Minimum [Member] |  |  |  |  |
Equity method investment ownership percentage |  |  | 20.00% |  |
Maximum [Member] |  |  |  |  |
Equity method investment ownership percentage |  |  | 31.30% |  |
Sale of two operating properties within the funds in 2014 [Member] |  |  |  |  |
Number of Real Estate Properties | 2 |  |  |  |
Proceeds from Sale of Property, Plant, and Equipment | $ 65,600,000 |  |  |  |
Gain on sale of property by unconsolidated joint venture |  | $ 3,600,000 |  |  |
Number of Units in Real Estate Property | 558 |  |  |  |

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- Definition Our proportionate share of the gain (loss) on the sale of an unconsolidated joint venture property or properties during the period. Gain (loss) is included in equity in income (loss) on the income statement. + References No definition available. + Details
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571 + Details
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