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Investment in Unconsolidated Real Estate Ventures - Summary of Financial Position of Real Estate Ventures (Parenthetical) (Details) - Coppell Associates [Member] - USD ($) $ in Millions | Sep. 30, 2016 | Jan. 29, 2016 | Dec. 31, 2015
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Schedule Of Equity Method Investments [Line Items] |  |  |
Equity method investment percentage |  | 50.00% |
Other Liabilities [Member] |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |
Investment in Real Estate Ventures, equity method | $ 0.0 | $ 1.1 | $ 1.1
Equity method investment percentage | 50.00% |  |

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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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