Fair Value Measurements - Impaired Assets, Measured at Fair Value on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Investments in single-family residential properties, net held for use and held for sale impairment adjustments
Total impairments	$ (126)	$ (289)	$ (650)	$ (4,202)
Operating Lease, Impairment Loss		1,750		1,750
Fair Value, Measurements, Nonrecurring \| Level 3 \| Rental Properties
Investments in single-family residential properties, net held for use and held for sale impairment adjustments
Pre-impairment amount	629	1,800	3,582	19,594
Total impairments	(126)	(289)	(650)	(4,113)
Fair value	503	1,511	2,932	15,481
Fair Value, Measurements, Nonrecurring \| Level 3 \| Rental Properties
Investments in single-family residential properties, net held for use and held for sale impairment adjustments
Pre-impairment amount	0	0	0	451
Total impairments	0	0	0	(89)
Fair value	$ 0	$ 0	$ 0	$ 362

Real Estate Additions, Investments In Single-Family Residential Properties, Gross

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- Definition

Real Estate Additions, Investments In Single-Family Residential Properties, Net Of Impairments

+ References

No definition available.

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- Definition

The charge against earnings in the period to reduce the carrying amount of real property to fair value.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230

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- Definition

Amount of loss from impairment of right-of-use asset from operating lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 25
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121593497&loc=SL77918431-209957

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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