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Beneficiaries Equity of the Parent Company (Textual) (Details) - USD ($)		3 Months Ended		9 Months Ended
	Sep. 10, 2019	Sep. 30, 2019	Mar. 31, 2019	Sep. 30, 2019	Sep. 30, 2018	Jan. 03, 2019
Class of Stock [Line Items]
Dividends, common stock	$ 33,800,000
Shares repurchased and retired (in shares)				1,337,169
Share price (in dollars per share)				$ 12.92
Value of stock repurchased and retired		$ 0	$ 17,281,000	$ 17,300,000
Maximum
Class of Stock [Line Items]
Share repurchase, authorized amount						$ 150,000,000.0
Dividend declared
Class of Stock [Line Items]
Dividends payable (in dollars per share)	$ 0.19
Redeemable Common Limited Partnership Units
Class of Stock [Line Items]
Redeemable common limited partnership units (in shares)				981,626	1,479,799