Deferred Costs and Other Intangibles - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Feb. 29, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Increase in deferred cost and intangible assets			$ 6,000
Deferred costs and other intangibles, net	$ 16,399		16,399			$ 10,429
Amortization expense related to deferred leasing costs, in-place leases, trademark and database	12,300	$ 4,000	19,800	$ 7,200
Noncash amortization of deferred financing costs			5,279	3,500
American Residential Properties Inc.
Finite-Lived Intangible Assets [Line Items]
Acquisition of in-place leases					$ 22,696
Line of Credit
Finite-Lived Intangible Assets [Line Items]
Noncash amortization of deferred financing costs	$ 700	$ 600	$ 1,300	$ 1,200