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Real Estate Disposition Activities (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 USD ($) community land_parcel | Jun. 30, 2015 USD ($) | Jun. 30, 2016 USD ($) community land_parcel home | Jun. 30, 2015 USD ($)
Summary of income from discontinued operations |  |  |  |
Number of Apartment Communities Sold | community |  |  | 2 |
Gain on sale of communities | $ 30,990 | $ 0 | $ 82,420 | $ 70,936
Number of Communities Held for Sale | community | 1 |  | 1 |
Number of Land Parcels Held For Sale | land_parcel | 4 |  | 4 |
Eaves Trumbull [Member] |  |  |  |
Summary of income from discontinued operations |  |  |  |
Apartment homes | home |  |  | 340 |
Proceeds from Sale of Real Estate |  |  | $ 70,250 |
Gain on sale of communities |  |  | $ 51,430 |
Avalon Essex [Member] |  |  |  |
Summary of income from discontinued operations |  |  |  |
Apartment homes | home |  |  | 154 |
Proceeds from Sale of Real Estate |  |  | $ 45,100 |
Gain on sale of communities |  |  | $ 31,081 |

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- Definition The net gain (loss) resulting from sales and other disposals of real estate owned for investment purposes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.14(d)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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- Definition Cash received for the sale of real estate that is not part of an investing activity during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585 + Details
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