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Single-Family Properties - Schedule of Real Estate Properties (Details) $ in Thousands | Dec. 31, 2017 USD ($) single_family_property | Dec. 31, 2016 USD ($) single_family_property
--- | --- | ---
Property Subject to or Available for Operating Lease |  |
Net book value | $ 8,064,980 | $ 7,547,856
Single family homes |  |
Property Subject to or Available for Operating Lease |  |
Number of properties | single_family_property | 51,239 | 48,422
Net book value | $ 8,064,980 | $ 7,547,856
Single family homes | Single-family properties being renovated |  |
Property Subject to or Available for Operating Lease |  |
Number of properties | single_family_property | 980 | 312
Net book value | $ 225,194 | $ 57,200
Single family homes | Single-family properties being prepared for re-lease |  |
Property Subject to or Available for Operating Lease |  |
Number of properties | single_family_property | 372 | 91
Net book value | $ 47,994 | $ 14,453
Single family homes | Single-family properties held for sale, net |  |
Property Subject to or Available for Operating Lease |  |
Number of properties | single_family_property | 310 | 1,119
Net book value | $ 35,803 | $ 87,430
Single family homes | Leased single-family properties |  |
Property Subject to or Available for Operating Lease |  |
Number of properties | single_family_property | 46,996 | 44,798
Net book value | $ 7,284,708 | $ 7,040,000
Single family homes | Vacant single-family properties available for lease |  |
Property Subject to or Available for Operating Lease |  |
Number of properties | single_family_property | 2,581 | 2,102
Net book value | $ 471,281 | $ 348,773

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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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