Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Total Shareholders’ Equity	Par Value	Additional Paid in Capital	Accumulated Deficit	Accumulated Other Comprehensive (Loss) Income	Total  Noncontrolling Interests	Operating Partnership Noncontrolling interest	Partially Owned Properties Noncontrolling Interest
Shareholders' equity, beginning balance at Dec. 31, 2020	$ 2,715,002	$ 2,641,297	$ 2,096	$ 3,303,231	$ (658,171)	$ (5,859)	$ 73,705	$ 73,302	$ 403
Increase (Decrease) in Stockholders' Equity
Net proceeds from sale of common shares	268,126	268,126	147	267,979
Restricted share award grants, net	9,414	9,414	4	10,722	(1,312)
Purchase of OP Units	(6,237)						(6,237)	(6,237)
Dividends/distributions declared	(207,383)	(200,926)			(200,926)		(6,457)	(6,457)
Preferred distributions	(13)	(13)			(13)
Issuance of OP Units in connection with acquisitions	116,467						116,467	116,467
Distributions	(224)						(224)		(224)
Change in market value of Redeemable Noncontrolling Interests	433	433		(23)	456
Derecognition of cash flow hedge	3,295	3,295				3,295
Change in fair value of interest rate swap agreements	1,672	1,672				1,672
Adjustment for Noncontrolling Interests ownership in Operating Partnership	0	29,045		29,045			(29,045)	(29,045)
Net income	86,481	83,965			83,965		2,516	2,211	305
Shareholders' equity, ending balance at Dec. 31, 2021	2,987,033	2,836,308	2,247	3,610,954	(776,001)	(892)	150,725	150,241	484
Increase (Decrease) in Stockholders' Equity
Net proceeds from sale of common shares	106,019	106,019	67	105,952
Restricted share award grants, net	8,813	8,813	4	11,277	(2,468)
Purchase of OP Units	(6,741)						(6,741)	(6,741)
Conversion of OP Units	0	23,088	15	23,073			(23,088)	(23,088)
Dividends/distributions declared	(220,343)	(210,326)			(210,326)		(10,017)	(10,017)
Contributions	569						569		569
Distributions	(238)						(238)		(238)
Change in market value of Redeemable Noncontrolling Interests	2,757	2,757			2,757
Derecognition of cash flow hedge	0
Change in fair value of interest rate swap agreements	6,075	6,075				6,075
Adjustment for Noncontrolling Interests ownership in Operating Partnership	0	(7,380)		(7,380)			7,380	7,380
Net income	109,907	104,366			104,366		5,541	5,240	301
Shareholders' equity, ending balance at Dec. 31, 2022	2,993,851	2,869,720	2,333	3,743,876	(881,672)	5,183	124,131	123,015	1,116
Increase (Decrease) in Stockholders' Equity
Net proceeds from sale of common shares	66,255	66,255	43	66,212
Restricted share award grants, net	7,897	7,897	7	9,638	(1,748)
Purchase of OP Units	(72)						(72)	(72)
Conversion of OP Units	2	2,771	2	2,769			(2,769)	(2,769)
Dividends/distributions declared	(228,760)	(219,749)			(219,749)		(9,011)	(9,011)
Contributions	8,171						8,171		8,171
Distributions	(213)						(213)		(213)
Derecognition of cash flow hedge	(1,763)	(1,763)				(1,763)
Change in fair value of interest rate swap agreements	(2,703)	(2,703)				(2,703)
Adjustment for Noncontrolling Interests ownership in Operating Partnership	0	(777)		(777)			777	777
Net income	43,853	41,876			41,876		1,977	1,722	255
Shareholders' equity, ending balance at Dec. 31, 2023	$ 2,886,518	$ 2,763,527	$ 2,385	$ 3,821,718	$ (1,061,293)	$ 717	$ 122,991	$ 113,662	$ 9,329