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Shareholders' Equity (Details) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($) $ / shares	Sep. 30, 2014 USD ($) $ / shares	Sep. 30, 2015 USD ($) market $ / shares	Sep. 30, 2014 USD ($) $ / shares
Class of Stock
Preferred stock, cumulative change in value of index based on purchase prices of single-family properties (as a percent)			50.00%
Number of top markets | market			20
Initial liquidation preference on the Company's participating preferred shares | $	$ 453,600		$ 453,600
Income (loss) allocated to noncontrolling interest | $	$ 3,109	$ 3,382	$ 10,795	$ 11,214
Series C Convertible Units
Class of Stock
Dividend payable per share	$ 0.15113	$ 0.15113	$ 0.15113	$ 0.15113
Class A common shares
Class of Stock
Dividend payable per share	0.05	0.05	$ 0.05	0.05
5.0% Series A Participating Preferred Shares
Class of Stock
Preferred stock, dividend rate, percentage			5.00%
Dividend payable per share	0.3125	0.3125	$ 0.3125	0.3125
5.0% Series B Participating Preferred Shares
Class of Stock
Preferred stock, dividend rate, percentage			5.00%
Dividend payable per share	0.3125	0.3125	$ 0.3125	0.3125
5.5% Series C Participating Preferred Shares
Class of Stock
Preferred stock, dividend rate, percentage			5.50%
Dividend payable per share	0.34375	0.34375	$ 0.34375	0.34375
Class B common shares
Class of Stock
Dividend payable per share	$ 0.05	$ 0.05	$ 0.05	$ 0.05

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