Condensed Consolidated Statement of Equity - 3 months ended Mar. 31, 2017 - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Accumulated Dividends in Excess of Earnings	Accumulated Other Comprehensive Loss, Net	Total Stockholders’ Equity	Noncontrolling Interests in Operating Partnership	Noncontrolling Interests in Consolidated Joint Ventures	Total Noncontrolling Interests
Balance at beginning of period at Dec. 31, 2016	$ 5,132,297	$ 1,012,961	$ 1,582	$ 5,764,497	$ (1,547,420)	$ (135,605)	$ 5,096,015	$ 29,684	$ 6,598	$ 36,282
Balance (shares) at Dec. 31, 2016			159,019,118
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of units to common stock			$ 2	2,742			2,744	(2,744)		(2,744)
Conversion of units to common stock (shares)			216,964
Issuance of unvested restricted stock (shares)			258,835
Issuance of common stock, net of offering costs	118			118			118
Exercise of stock options	$ 687			687			687
Exercise of stock options (shares)	17,668		17,668
Shares issued under employee stock purchase plan	$ 1,919			1,919			1,919
Shares issued under employee stock purchase plan (shares)			27,307
Amortization of share-based compensation	6,067			6,067			6,067
Reclassification of vested share-based awards				(6,939)			(6,939)	6,939		6,939
Dividends declared on preferred stock	(17,393)				(17,393)		(17,393)
Dividends and distributions on common stock and common and incentive units	(150,911)				(148,358)		(148,358)	(2,553)		(2,553)
Distributions to noncontrolling interests in consolidated joint ventures, net of contributions	(146)								(146)	(146)
Net income	84,563				83,538		83,538	904	121	1,025
Other comprehensive income—foreign currency translation adjustments	16,578					16,354	16,354	224		224
Other comprehensive loss—fair value of interest rate swaps and foreign currency hedges	(4,364)					(4,305)	(4,305)	(59)		(59)
Other comprehensive income—reclassification of accumulated other comprehensive loss to interest expense	1,030					1,016	1,016	14		14
Balance at end of period at Mar. 31, 2017	$ 5,070,445	$ 1,012,961	$ 1,584	$ 5,769,091	$ (1,629,633)	$ (122,540)	$ 5,031,463	$ 32,409	$ 6,573	$ 38,982
Balance (shares) at Mar. 31, 2017			159,539,892