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Single-Family Properties - Narrative (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2016 USD ($) property | Sep. 30, 2015 USD ($) | Sep. 30, 2016 USD ($) property | Sep. 30, 2015 USD ($) | Feb. 29, 2016 single_family_property | Dec. 31, 2015 USD ($)
Property Subject to or Available for Operating Lease |  |  |  |  |  |
Real estate, net increase |  |  | $ 1,200,000 |  |  |
Net book value | $ 7,545,398 |  | 7,545,398 |  |  | $ 6,289,938
Goodwill allocated to leased properties | $ 400 |  | $ 400 |  |  |
Number of real estate properties sold | property | 453 |  | 587 |  |  |
Proceeds from the sale of real estate properties | $ 56,200 |  | $ 71,894 | $ 0 |  |
Gain on sale of single-family properties, net | 11,682 | $ 0 | 12,574 | 0 |  |
Goodwill | 120,317 |  | 120,317 |  |  | 120,655
Single Family Homes |  |  |  |  |  |
Property Subject to or Available for Operating Lease |  |  |  |  |  |
Net book value | 15,400 |  | 15,400 |  |  | $ 8,500
Depreciation expense | $ 67,200 | $ 63,900 | $ 194,200 | $ 165,800 |  |
American Residential Properties Inc. |  |  |  |  |  |
Property Subject to or Available for Operating Lease |  |  |  |  |  |
Number of properties acquired | single_family_property |  |  |  |  | 8,936 |

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- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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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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