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Single-Family Properties (Details) $ in Thousands | Sep. 30, 2015 USD ($) single_family_property | Dec. 31, 2014 USD ($) single_family_property
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Property Subject to or Available for Operating Lease |  |
Number of properties | single_family_property | 38,377 | 34,599
Net book value | $ 6,267,464 | $ 5,710,671
Single Family Homes | Properties being renovated |  |
Property Subject to or Available for Operating Lease |  |
Number of properties | single_family_property | 810 | 2,886
Net book value | $ 127,734 | $ 476,120
Single Family Homes | Properties being prepared for re-lease |  |
Property Subject to or Available for Operating Lease |  |
Number of properties | single_family_property | 283 | 630
Net book value | $ 45,756 | $ 104,974
Single Family Homes | Properties Held for Sale |  |
Property Subject to or Available for Operating Lease |  |
Number of properties | single_family_property | 46 | 26
Net book value | $ 6,472 | $ 3,818
Leased | Single Family Homes |  |
Property Subject to or Available for Operating Lease |  |
Number of properties | single_family_property | 35,617 | 28,250
Net book value | $ 5,815,458 | $ 4,631,797
Vacant | Single Family Homes |  |
Property Subject to or Available for Operating Lease |  |
Number of properties | single_family_property | 1,621 | 2,807
Net book value | $ 272,044 | $ 493,962

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- Definition Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(d)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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