Condensed Consolidated Statement of Noncontrolling Interests and Equity - USD ($) $ in Thousands	Total	Noncontrolling Interest - Preferred Operating Partnership	Noncontrolling Interest - Operating Partnership	Noncontrolling Interest - Other	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income	Accumulated Deficit
Balance, beginning of period at Dec. 31, 2018	$ 2,785,422	$ 153,096	$ 218,362	$ 240	$ 1,271	$ 2,640,705	$ 34,650	$ (262,902)
Balance, beginning of period (in shares) at Dec. 31, 2018					127,103,750
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon the exercise of options	1,757				$ 3	1,754
Issuance of common stock upon the exercise of options (in shares)					169,021
Restricted stock grants issued	0
Restricted stock grants issued (in shares)					35,022
Restricted stock grants cancelled	0
Restricted stock grants cancelled (in shares)					(1,244)
Compensation expense related to stock-based awards	2,954					2,954
Redemption of Operating Partnership units for stock	0		(3,310)			3,310
Redemption of Operating Partnership units (in shares)					85,501
Issuance of Preferred D Units in the Operating Partnership in conjunction with acquisitions	23,447	23,447
Net income	102,160	3,164	4,235	(9)				94,770
Other comprehensive income	(23,993)	(147)	(1,003)				(22,843)
Distributions to Operating Partnership units held by noncontrolling interests	(8,412)	(3,296)	(5,116)
Dividends paid on common stock	(109,523)							(109,523)
Balance, end of period at Mar. 31, 2019	2,773,812	176,264	213,168	231	$ 1,274	2,648,723	11,807	(277,655)
Balance, end of period (in shares) at Mar. 31, 2019					127,392,050
Balance, beginning of period at Dec. 31, 2019	$ 2,921,694	175,948	205,419	366	$ 1,295	2,868,681	(28,966)	(301,049)
Balance, beginning of period (in shares) at Dec. 31, 2019	129,534,407				129,534,407
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon the exercise of options	$ 944				$ 1	943
Issuance of common stock upon the exercise of options (in shares)					77,400
Issuance of common stock in connection with share based compensation	2,980				$ 1	2,979
Issuance of common stock in connection with share based compensation (in shares)					73,602
Restricted stock grants cancelled	0
Restricted stock grants cancelled (in shares)					(1,767)
Buyback of common stock, net of offering costs	(52,204)				$ (7)			(52,197)
Buyback of common stock, net of offering costs (in shares)					(653,597)
Redemption of Operating Partnership units for stock	0		(330)			330
Redemption of Operating Partnership units (in shares)					8,862
Net income	116,162	3,112	4,877	(6)				108,179
Other comprehensive income	(89,244)	(563)	(3,807)				(84,874)
Distributions to Operating Partnership units held by noncontrolling interests	(8,505)	(3,178)	(5,327)
Dividends paid on common stock	(117,197)							(117,197)
Balance, end of period at Mar. 31, 2020	$ 2,774,630	$ 175,319	$ 200,832	$ 360	$ 1,290	$ 2,872,933	$ (113,840)	$ (362,264)
Balance, end of period (in shares) at Mar. 31, 2020	129,038,907				129,038,907