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Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Related Party Transaction
Amounts payable to affiliates		$ 4,967	$ 4,720
American Homes 4 Rent, L.P.
Related Party Transaction
Amounts payable to affiliates		$ 4,967	$ 4,720
Class A common shares/units
Related Party Transaction
Common stock, shares outstanding (in shares)		286,114,637	242,740,482
Class B common shares
Related Party Transaction
Common stock, shares outstanding (in shares)		635,075	635,075
Affiliates
Related Party Transaction
Percent of shares held		27.30%	26.10%
Due from affiliates			$ 4,700
Affiliates | American Homes 4 Rent, L.P.
Related Party Transaction
Amounts payable to affiliates		$ 5,000
Due from affiliates		$ 25,700	$ 25,700
Affiliates | Class A common shares/units
Related Party Transaction
Percent of shares held		14.00%	12.10%
Common stock, shares outstanding (in shares)		53,985,492	54,018,819
Affiliates | Class B common shares
Related Party Transaction
Common stock, shares outstanding (in shares)		635,075	635,075
Board of Directors Chairman | Class A common shares/units | Private Placement
Related Party Transaction
Consideration received for stock	$ 50,000

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