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Single-Family Properties - Components of Single-Family Properties (Details) $ in Thousands | Sep. 30, 2018 USD ($) property | Dec. 31, 2017 USD ($) property
--- | --- | ---
Property Subject to or Available for Operating Lease |  |
Net book value | $ 8,258,557 | $ 8,064,980
Single Family Homes |  |
Property Subject to or Available for Operating Lease |  |
Number of properties | property | 52,464 | 51,239
Net book value | $ 8,258,557 | $ 8,064,980
Single Family Homes | Single-family properties being renovated |  |
Property Subject to or Available for Operating Lease |  |
Number of properties | property | 345 | 980
Net book value | $ 90,485 | $ 225,194
Single Family Homes | Single-family properties being prepared for re-lease |  |
Property Subject to or Available for Operating Lease |  |
Number of properties | property | 430 | 372
Net book value | $ 66,730 | $ 47,994
Single Family Homes | Single-family properties held for sale, net |  |
Property Subject to or Available for Operating Lease |  |
Number of properties | property | 1,865 | 310
Net book value | $ 299,551 | $ 35,803
Single Family Homes | Single-family properties identified for future sale |  |
Property Subject to or Available for Operating Lease |  |
Number of properties | property | 401 |
Net book value | $ 58,672 |
Single Family Homes | Leased single-family properties |  |
Property Subject to or Available for Operating Lease |  |
Number of properties | property | 47,776 | 46,996
Net book value | $ 7,458,840 | $ 7,284,708
Single Family Homes | Vacant single-family properties available for lease |  |
Property Subject to or Available for Operating Lease |  |
Number of properties | property | 1,647 | 2,581
Net book value | $ 284,279 | $ 471,281

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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://fasb.org/us-gaap/role/ref/legacyRef -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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