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Investments in Real Estate Entities (Details) $ in Thousands | 3 Months Ended | 6 Months Ended | 15 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2017 USD ($) entity | Jun. 30, 2016 USD ($) | Jun. 30, 2017 USD ($) entity home | Jun. 30, 2016 USD ($) | Mar. 31, 2016 USD ($) | Dec. 31, 2016 USD ($)
Investment in Real Estate Entities |  |  |  |  |  |
Gain on sale of communities | $ 0 | $ 76,934 | $ 29,447 | $ 180,256 |  |
Equity method investment, difference between carrying amount and underlying equity | 36,789 |  | 36,789 |  |  | $ 38,015
Other than temporary impairment losses, investments | 0 | 0 | 0 | 0 |  |
Accrued expenses and other liabilities | 275,940 |  | 275,940 |  |  | $ 274,676
Casualty and impairment (gain) loss, net | $ 0 | 1,732 | (11,688) | 3,935 |  |
New England |  |  |  |  |  |
Investment in Real Estate Entities |  |  |  |  |  |
Insurance recoveries |  | 8,493 |  | 8,493 |  |
Casualty loss |  | (2,761) |  | (2,761) |  |
Casualty and impairment (gain) loss, net |  | (5,732) |  | (5,732) |  |
Land |  |  |  |  |  |
Investment in Real Estate Entities |  |  |  |  |  |
Casualty and impairment (gain) loss, net |  | $ (4,000) | $ (9,350) | (10,500) |  |
Avalon at Edgewater |  |  |  |  |  |
Investment in Real Estate Entities |  |  |  |  |  |
Insurance recoveries |  |  |  | 29,008 | $ 73,150 |
Casualty and impairment (gain) loss, net |  |  |  | $ 8,702 |  |
Unconsolidated real estate entities |  |  |  |  |  |
Investment in Real Estate Entities |  |  |  |  |  |
Number of unconsolidated real estate entities | entity | 5 |  | 5 |  |  |
Unconsolidated real estate entities | Minimum |  |  |  |  |  |
Investment in Real Estate Entities |  |  |  |  |  |
Equity method investment, ownership percentage | 20.00% |  | 20.00% |  |  |
Unconsolidated real estate entities | Maximum |  |  |  |  |  |
Investment in Real Estate Entities |  |  |  |  |  |
Equity method investment, ownership percentage | 31.30% |  | 31.30% |  |  |
Avalon Bay Value Added Fund II LP |  |  |  |  |  |
Investment in Real Estate Entities |  |  |  |  |  |
Equity method investment, ownership percentage | 31.30% |  | 31.30% |  |  |
Percentage of right of distribution | 20.00% |  | 20.00% |  |  |
Percentage of right of remaining distribution | 80.00% |  | 80.00% |  |  |
Proceeds from equity method investment, dividends or distributions |  |  | $ 6,765 |  |  |
Avalon Bay Value Added Fund II LP | Eaves Gaithersburg |  |  |  |  |  |
Investment in Real Estate Entities |  |  |  |  |  |
Number of apartment homes sold | home |  |  | 684 |  |  |
Proceeds from sale of real estate |  |  | $ 117,000 |  |  |
Gain on sale of communities |  |  | 8,697 |  |  |
Repayments of secured mortgages |  |  | $ 63,200 |  |  |
Sudbury |  |  |  |  |  |
Investment in Real Estate Entities |  |  |  |  |  |
Equity method investment, ownership percentage | 60.00% |  | 60.00% |  |  |
Land | $ 19,200 |  | $ 19,200 |  |  |

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- Definition Difference between amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and amount of underlying equity in net assets the reporting Entity has in the investee. + 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)(3) -URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571 + Details
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