Restatement of Previously Issued Consolidated Financial Statements - Schedule of Stockholders Equity (Details) - USD ($) $ in Thousands	3 Months Ended						6 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Balance			$ 2,050,204			$ 2,188,390	$ 2,050,204	$ 2,188,390	$ 2,050,204	$ 2,188,390	$ 2,149,935	$ 2,050,204	$ 2,188,390	$ 2,082,757
Balance (in Shares)	88,419,303	86,302,352	86,268,303	86,264,641	85,989,836	87,050,465	86,268,303	87,050,465	86,268,303	87,050,465	89,303,545	86,268,303	87,050,465
Issuance of Common Shares												$ 63,876		145,498
Noncontrolling interest distributions												(27,051)	$ (27,574)	(94,283)
Noncontrolling interest contributions												30,164	52,174	161,365
Comprehensive (loss) income												77,937	(124,345)	(13,519)
Acquisition Of Noncontrolling Interest												0	(588)	0
Repurchase of Common Shares						$ (22,400)							(22,386)	$ 0
Repurchase of Common Shares (in shares)						(1,219,065)								0
Common Shares
Balance			$ 86			$ 87	$ 86	$ 87	$ 86	$ 87	$ 89	$ 86	$ 87	$ 82
Balance (in Shares)			86,269,000			87,050,000	86,269,000	87,050,000	86,269,000	87,050,000	89,304,000	86,269,000	87,050,000	81,557,000
Issuance of Common Shares (in Shares)												2,889,000		5,164,000
Issuance of Common Shares												$ 3		$ 5
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership (in Shares)												90,000	408,000	308,000
Repurchase of Common Shares													$ (1)
Repurchase of Common Shares (in shares)													(1,219,000)
Employee and trustee stock compensation, net (in Shares)												56,000	30,000	21,000
Additional Paid-in Capital
Balance			$ 1,683,165			$ 1,706,357	$ 1,683,165	$ 1,706,357	$ 1,683,165	$ 1,706,357	$ 1,754,383	$ 1,683,165	$ 1,706,357	$ 1,548,603
Issuance of Common Shares												63,873		145,493
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership												1,431	6,544	5,104
Reallocation of noncontrolling interests												4,768	7,197	6,611
Repurchase of Common Shares													(22,385)
Accumulated Other Comprehensive Income (Loss)
Balance			(74,891)			(31,474)	(74,891)	(31,474)	(74,891)	(31,474)	(36,214)	(74,891)	(31,474)	516
Comprehensive (loss) income												38,677	(43,417)	(31,990)
Distributions in Excess of Accumulated Earnings
Balance			(167,321)			(133,019)	(167,321)	(133,019)	(167,321)	(133,019)	(196,645)	(167,321)	(133,019)	(90,426)
Comprehensive (loss) income												23,548	(8,976)	53,717
Total Common Shareholders' Equity
Balance			1,441,039			1,541,951	1,441,039	1,541,951	1,441,039	1,541,951	1,521,613	1,441,039	1,541,951	1,458,775
Issuance of Common Shares												63,876		145,498
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership												1,431	6,544	5,104
Comprehensive (loss) income												62,225	(52,393)	21,727
Reallocation of noncontrolling interests												4,768	7,197	6,611
Repurchase of Common Shares													(22,386)	0
Noncontrolling Interests
Balance			609,165			646,439	609,165	646,439	609,165	646,439	$ 628,322	609,165	646,439	623,982
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership												(1,431)	(6,544)	(5,104)
Noncontrolling interest distributions												(27,051)	(27,574)	(94,283)
Noncontrolling interest contributions												30,164	52,174	161,365
Comprehensive (loss) income												15,712	(71,952)	(35,246)
Reallocation of noncontrolling interests												(4,768)	(7,197)	(6,611)	[1]
Acquisition Of Noncontrolling Interest													15,918
Cumulative Effect Period Of Adoption Adjustment [Member]
Balance						(400)		(400)		(400)			(400)
Cumulative Effect Period Of Adoption Adjustment [Member] | Distributions in Excess of Accumulated Earnings
Balance						(389)		(389)		(389)			(389)
Cumulative Effect Period Of Adoption Adjustment [Member] | Total Common Shareholders' Equity
Balance						(389)		(389)		(389)			(389)
Cumulative Effect Period Of Adoption Adjustment [Member] | Noncontrolling Interests
Balance						(11)		(11)		(11)			(11)
Previously Reported [Member]
Balance	$ 2,116,350	$ 2,084,369	2,048,553	$ 2,093,331	$ 2,011,560	2,186,965	2,048,553	2,186,965	2,048,553	2,186,965		2,048,553	2,186,965
Balance (in Shares)		2,084,369
Issuance of Common Shares	189						45,677		45,865
Noncontrolling interest distributions	(10,527)	$ (4,355)	(6,676)	(20,117)	(1,418)	(3,118)	(11,031)	(4,536)	(21,558)	(24,654)
Noncontrolling interest contributions	9,518	5,868	11,241	8,427	21,041	7,268	17,109	28,309	26,627	36,736
Comprehensive (loss) income	38,130	(3,518)	40,733	(31,831)	59,400	(133,836)	37,215	(74,436)	75,345	(106,268)			(125,071)	(15,342)
Reallocation of noncontrolling interests
Cumulative effect of change in accounting principle								(400)
Acquisition Of Noncontrolling Interest					588			588		588			(588)	0
Repurchase of Common Shares		(45,677)			(34)	(22,352)		(22,386)		(22,386)
Previously Reported [Member] | Common Shares
Balance	$ 88	$ 86	$ 86	$ 86	$ 86	$ 87	$ 86	$ 87	$ 86	$ 87		$ 86	$ 87
Balance (in Shares)	88,419,000	86,302,000	86,269,000	86,265,000	85,990,000	87,050,000	86,269,000	87,050,000	86,269,000	87,050,000		86,269,000	87,050,000
Issuance of Common Shares (in Shares)	13						2,072		2,085
Issuance of Common Shares							$ 2		$ 2
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership (in Shares)	18	7	19		260	148	26	408	44	408
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership
Repurchase of Common Shares		$ 2				$ (1)		$ (1)		$ (1)
Repurchase of Common Shares (in shares)		2,072				(1,219)		(1,219)		(1,219)
Employee and trustee stock compensation, net (in Shares)	2	38	14		15	11	52	26	54	27
Previously Reported [Member] | Additional Paid-in Capital
Balance	$ 1,730,686	$ 1,683,552	$ 1,683,165	$ 1,693,006	$ 1,686,794	$ 1,706,357	$ 1,683,165	$ 1,706,357	$ 1,683,165	$ 1,706,357		$ 1,683,165	$ 1,706,357
Balance (in Shares)		1,683,552
Issuance of Common Shares	189						45,675		45,863
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership	288	$ 115	294		4,072	2,472	409	6,544	697	6,544
Reallocation of noncontrolling interests	2,060	1,119	(369)	2,100	1,999	145	750	2,144	2,809	4,244
Repurchase of Common Shares		45,675			(34)	(22,351)		(22,385)		(22,385)
Previously Reported [Member] | Accumulated Other Comprehensive Income (Loss)
Balance	(47,909)	$ (41,962)	(74,891)	(90,209)	(85,715)	(31,175)	(74,891)	(31,175)	(74,891)	(31,175)		(74,891)	(31,175)
Balance (in Shares)		(41,962)
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership
Comprehensive (loss) income	4,740	$ (5,947)	32,929	4,336	(4,494)	(54,540)	26,982	(59,034)	31,722	(54,698)
Reallocation of noncontrolling interests
Repurchase of Common Shares
Previously Reported [Member] | Distributions in Excess of Accumulated Earnings
Balance	(184,174)	$ (174,829)	(167,046)	(147,291)	(166,701)	(132,961)	(167,046)	(132,961)	(167,046)	(132,961)		(167,046)	(132,961)
Balance (in Shares)		(174,829)
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership
Comprehensive (loss) income	12,069	$ 3,918	5,162	(9,030)	19,410	(8,414)	9,080	10,996	21,149	1,966
Reallocation of noncontrolling interests
Cumulative effect of change in accounting principle								(389)
Repurchase of Common Shares
Previously Reported [Member] | Total Common Shareholders' Equity
Balance	1,498,691	$ 1,466,847	1,441,314	1,455,592	1,434,464	1,542,308	1,441,314	1,542,308	1,441,314	1,542,308		1,441,314	1,542,308
Balance (in Shares)		1,466,847
Issuance of Common Shares	189						45,677		45,865
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership	288	$ 115	294		4,072	2,472	409	6,544	697	6,544
Comprehensive (loss) income	16,809	(2,029)	38,091	(4,694)	14,916	(62,954)	36,062	(48,038)	52,871	(52,732)
Reallocation of noncontrolling interests	2,060	1,119	(369)	2,100	1,999	145	750	2,144	2,809	4,244
Cumulative effect of change in accounting principle								(389)
Repurchase of Common Shares		(45,677)			(34)	(22,352)		(22,386)		(22,386)
Previously Reported [Member] | Noncontrolling Interests
Balance	617,659	$ 617,522	607,239	637,739	577,096	644,657	607,239	644,657	607,239	644,657		607,239	644,657
Balance (in Shares)		617,522
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership	(288)	$ (115)	(294)		(4,072)	(2,472)	(409)	(6,544)	(697)	(6,544)
Noncontrolling interest distributions	10,527	4,355	6,676	20,117	1,418	3,118	11,031	4,536	21,558	24,654
Noncontrolling interest contributions	9,518	5,868	11,241	8,427	21,041	7,268	17,109	28,309	26,627	36,736
Comprehensive (loss) income	21,321	(1,489)	2,642	(27,137)	44,484	(70,882)	1,153	(26,398)	22,474	(53,536)
Reallocation of noncontrolling interests	(2,060)	(1,119)	369	(2,100)	(1,999)	(145)	(750)	(2,144)	(2,809)	(4,244)
Cumulative effect of change in accounting principle								(11)
Acquisition Of Noncontrolling Interest					588			588		588
Repurchase of Common Shares
Previously Reported [Member] | Cumulative Effect Period Of Adoption Adjustment [Member]
Balance			2,048,553			2,186,965	2,048,553	2,186,965	2,048,553	2,186,965		2,048,553	2,186,965	2,081,947
Issuance of Common Shares														145,498
Noncontrolling interest distributions													(27,574)	(94,289)
Noncontrolling interest contributions													52,674	161,628
Comprehensive (loss) income													(125,071)	(15,342)
Cumulative effect of change in accounting principle						(400)				(400)			(400)
Acquisition Of Noncontrolling Interest													588
Repurchase of Common Shares													(22,386)
Dividends/distributions declared													(27,155)	(103,434)
Employee and trustee stock compensation, net													10,912	10,957
Previously Reported [Member] | Cumulative Effect Period Of Adoption Adjustment [Member] | Common Shares
Balance			$ 86			$ 87	$ 86	$ 87	$ 86	$ 87		$ 86	$ 87	$ 82
Balance (in Shares)			86,269			87,050,000	86,269	87,050,000	86,269	87,050,000		86,269	87,050,000	81,557
Issuance of Common Shares (in Shares)														5,164
Issuance of Common Shares														$ 5
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership (in Shares)													408	308
Repurchase of Common Shares													$ (1)
Repurchase of Common Shares (in shares)													(1,219)
Employee and trustee stock compensation, net (in Shares)													30,000	21
Previously Reported [Member] | Cumulative Effect Period Of Adoption Adjustment [Member] | Additional Paid-in Capital
Balance			$ 1,683,165			$ 1,706,357	$ 1,683,165	$ 1,706,357	$ 1,683,165	$ 1,706,357		$ 1,683,165	$ 1,706,357	$ 1,548,603
Issuance of Common Shares														145,493
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership													6,544	5,104
Reallocation of noncontrolling interests													7,197	6,611
Acquisition Of Noncontrolling Interest													(15,330)
Repurchase of Common Shares													(22,385)
Employee and trustee stock compensation, net													782	546
Previously Reported [Member] | Cumulative Effect Period Of Adoption Adjustment [Member] | Accumulated Other Comprehensive Income (Loss)
Balance			(74,891)			(31,175)	(74,891)	(31,175)	(74,891)	(31,175)		(74,891)	(31,175)	516
Comprehensive (loss) income													(43,716)	(31,691)
Reallocation of noncontrolling interests													0
Previously Reported [Member] | Cumulative Effect Period Of Adoption Adjustment [Member] | Distributions in Excess of Accumulated Earnings
Balance			(167,046)			(132,961)	(167,046)	(132,961)	(167,046)	(132,961)		(167,046)	(132,961)	(89,696)
Comprehensive (loss) income													(8,759)	53,045
Reallocation of noncontrolling interests
Cumulative effect of change in accounting principle						(389)				(389)			(389)
Dividends/distributions declared													(24,937)	(96,310)
Previously Reported [Member] | Cumulative Effect Period Of Adoption Adjustment [Member] | Total Common Shareholders' Equity
Balance			1,441,314			1,542,308	1,441,314	1,542,308	1,441,314	1,542,308		1,441,314	1,542,308	1,459,505
Issuance of Common Shares														145,498
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership													6,544	5,104
Comprehensive (loss) income													(52,475)	21,354
Reallocation of noncontrolling interests													7,197	6,611
Cumulative effect of change in accounting principle						(389)				(389)			(389)
Acquisition Of Noncontrolling Interest													(15,330)
Repurchase of Common Shares													(22,386)
Dividends/distributions declared													(24,937)	(96,310)
Employee and trustee stock compensation, net													782	546
Previously Reported [Member] | Cumulative Effect Period Of Adoption Adjustment [Member] | Noncontrolling Interests
Balance			607,239			644,657	607,239	644,657	607,239	644,657		607,239	644,657	622,442
Issuance of Common Shares
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership													(6,544)	(5,104)
Noncontrolling interest distributions													(27,574)	(94,289)
Noncontrolling interest contributions													52,674	161,628
Comprehensive (loss) income													(72,596)	(36,696)
Reallocation of noncontrolling interests													(7,197)	(6,611)
Cumulative effect of change in accounting principle						(11)				(11)			(11)
Acquisition Of Noncontrolling Interest													15,918
Repurchase of Common Shares
Dividends/distributions declared													(2,218)	(7,124)
Employee and trustee stock compensation, net													10,130	10,411
Revision of Prior Period, Adjustment [Member]
Balance	612	1,439	1,651	2,114	3,933	1,425	1,651	1,425	1,651	1,425		1,651	1,425
Noncontrolling interest distributions	(400)		(1,000)				(1,000)		(1,400)
Comprehensive (loss) income	(534)	(827)	(1,212)	393	(1,819)	2,508	(2,039)	689	(2,573)	1,082			726	1,823
Revision of Prior Period, Adjustment [Member] | Common Shares
Balance
Balance (in Shares)					0	0		0		0			0
Revision of Prior Period, Adjustment [Member] | Additional Paid-in Capital
Balance
Revision of Prior Period, Adjustment [Member] | Accumulated Other Comprehensive Income (Loss)
Balance					(299)	(299)		(299)		(299)			(299)
Comprehensive (loss) income					299			299		299
Revision of Prior Period, Adjustment [Member] | Distributions in Excess of Accumulated Earnings
Balance	(827)	(620)	(275)	(133)	49	(58)	(275)	(58)	(275)	(58)		(275)	(58)
Comprehensive (loss) income	(62)	(207)	(345)	(5)		9	(552)	(75)	(614)	(80)
Revision of Prior Period, Adjustment [Member] | Total Common Shareholders' Equity
Balance	(827)	(620)	(275)	(133)	(348)	(357)	(275)	(357)	(275)	(357)		(275)	(357)
Comprehensive (loss) income	(62)	(207)	(345)	(5)	215	9	(552)	224	(614)	219
Revision of Prior Period, Adjustment [Member] | Noncontrolling Interests
Balance	1,439	2,059	1,926	2,247	4,281	1,782	1,926	1,782	1,926	1,782		1,926	1,782
Noncontrolling interest distributions	(400)		(1,000)				(1,000)		(1,400)
Comprehensive (loss) income	(472)	(620)	(867)	398	(2,034)	2,499	(1,487)	465	(1,959)	863
Revision of Prior Period, Adjustment [Member] | Cumulative Effect Period Of Adoption Adjustment [Member]
Balance			1,651			1,425	1,651	1,425	1,651	1,425		1,651	1,425	810
Noncontrolling interest distributions													500	(6)
Noncontrolling interest contributions														(263)
Comprehensive (loss) income													726	1,823
Employee and trustee stock compensation, net														(951)
Revision of Prior Period, Adjustment [Member] | Cumulative Effect Period Of Adoption Adjustment [Member] | Accumulated Other Comprehensive Income (Loss)
Balance						(299)		(299)		(299)			(299)
Comprehensive (loss) income													299	(299)
Revision of Prior Period, Adjustment [Member] | Cumulative Effect Period Of Adoption Adjustment [Member] | Distributions in Excess of Accumulated Earnings
Balance			(275)			(58)	(275)	(58)	(275)	(58)		(275)	(58)	(730)
Comprehensive (loss) income													(217)	672
Revision of Prior Period, Adjustment [Member] | Cumulative Effect Period Of Adoption Adjustment [Member] | Total Common Shareholders' Equity
Balance			(275)			(357)	(275)	(357)	(275)	(357)		(275)	(357)	(730)
Comprehensive (loss) income													82	373
Revision of Prior Period, Adjustment [Member] | Cumulative Effect Period Of Adoption Adjustment [Member] | Noncontrolling Interests
Balance			1,926			1,782	1,926	1,782	1,926	1,782		1,926	1,782	1,540
Noncontrolling interest distributions													500	(6)
Noncontrolling interest contributions														(263)
Comprehensive (loss) income													644	1,450
Employee and trustee stock compensation, net														(951)
As Restated [Member]
Balance	2,116,962	2,085,808	2,050,204	2,095,445	2,015,493	2,188,390	2,050,204	2,188,390	2,050,204	2,188,390		2,050,204	2,188,390
Issuance of Common Shares	189	45,677					45,677		45,865
Noncontrolling interest distributions	(10,127)	(4,355)	(5,676)	(20,117)	(1,418)	(3,118)	(10,031)	(4,536)	(20,158)	(24,654)
Noncontrolling interest contributions	9,518	5,868	11,241	8,427	21,041	7,268	17,109	28,309	26,627	36,736
Comprehensive (loss) income	37,596	(4,345)	39,521	(31,438)	57,581	(131,328)	35,176	(73,747)	72,772	(105,186)			(124,345)	(13,519)
Cumulative effect of change in accounting principle								(400)
Acquisition Of Noncontrolling Interest					588			588		588			(588)	0
Repurchase of Common Shares					(34)	(22,352)		(22,386)		(22,386)
As Restated [Member] | Common Shares
Balance	$ 88	$ 86	$ 86	$ 86	$ 86	$ 87	$ 86	$ 87	$ 86	$ 87		$ 86	$ 87
Balance (in Shares)	88,419,000	86,302,000	86,269,000	86,265,000	85,990,000	87,050,000	86,269,000	87,050,000	86,269,000	87,050,000		86,269,000	87,050,000
Issuance of Common Shares (in Shares)	13	2,072					2,072		2,085
Issuance of Common Shares		$ 2					$ 2		$ 2
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership (in Shares)	18	7	19		260	148	26	408	44
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership										$ 408
Repurchase of Common Shares						$ (1)		$ (1)		$ (1)
Repurchase of Common Shares (in shares)						(1,219)		(1,219)		(1,219)
Employee and trustee stock compensation, net (in Shares)		38	14	1	15	11	52	26	54	27
As Restated [Member] | Additional Paid-in Capital
Balance	$ 1,730,686	$ 1,683,552	$ 1,683,165	$ 1,693,006	$ 1,686,794	$ 1,706,357	$ 1,683,165	$ 1,706,357	$ 1,683,165	$ 1,706,357		$ 1,683,165	$ 1,706,357
Issuance of Common Shares	189	45,675					45,675		45,863
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership	288	115	294		4,072	2,472	409	6,544	697	6,544
Reallocation of noncontrolling interests	2,060	1,119	(369)	2,100	1,999	145	750	2,144	2,809	4,244
Repurchase of Common Shares					(34)	(22,351)		(22,385)		(22,385)
As Restated [Member] | Accumulated Other Comprehensive Income (Loss)
Balance	(47,909)	(41,962)	(74,891)	(90,209)	(86,014)	(31,474)	(74,891)	(31,474)	(74,891)	(31,474)		(74,891)	(31,474)
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership
Comprehensive (loss) income	4,740	(5,947)	32,929	4,336	(4,195)	(54,540)	26,982	(58,735)	31,722	(54,399)
Repurchase of Common Shares
As Restated [Member] | Distributions in Excess of Accumulated Earnings
Balance	(185,001)	(175,449)	(167,321)	(147,424)	(166,750)	(133,019)	(167,321)	(133,019)	(167,321)	(133,019)		(167,321)	(133,019)
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership
Comprehensive (loss) income	12,007	3,711	4,817	(9,035)	19,326	(8,405)	8,528	10,921	20,535	1,886
Cumulative effect of change in accounting principle								(389)
Repurchase of Common Shares
As Restated [Member] | Total Common Shareholders' Equity
Balance	1,497,864	1,466,227	1,441,039	1,455,459	1,434,116	1,541,951	1,441,039	1,541,951	1,441,039	1,541,951		1,441,039	1,541,951
Issuance of Common Shares	189	45,677					45,677		45,865
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership	288	115	294		4,072	2,472	409	6,544	697	6,544
Comprehensive (loss) income	16,747	(2,236)	37,746	(4,699)	15,131	(62,945)	35,510	(47,814)	52,257	(52,513)
Reallocation of noncontrolling interests	2,060	1,119	(369)	2,100	1,999	145	750	2,144	2,809	4,244
Cumulative effect of change in accounting principle								(389)
Repurchase of Common Shares					(34)	(22,352)		(22,386)		(22,386)
As Restated [Member] | Noncontrolling Interests
Balance	619,098	619,581	609,165	639,986	581,377	646,439	609,165	646,439	609,165	646,439		609,165	646,439
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership	(288)	(115)	(294)		(4,072)	(2,472)	(409)	(6,544)	(697)	(6,544)
Noncontrolling interest distributions	10,127	4,355	5,676	20,117	1,418	3,118	10,031	4,536	20,158	24,654
Noncontrolling interest contributions	9,518	5,868	11,241	8,427	21,041	7,268	17,109	28,309	26,627	36,736
Comprehensive (loss) income	20,849	(2,109)	1,775	(26,739)	42,450	(68,383)	(334)	(25,933)	20,515	(52,673)
Reallocation of noncontrolling interests	$ (2,060)	$ (1,119)	369	$ (2,100)	(1,999)	(145)	(750)	(2,144)	(2,809)	(4,244)
Cumulative effect of change in accounting principle								(11)
Acquisition Of Noncontrolling Interest					$ 588			588		588
Repurchase of Common Shares
As Restated [Member] | Cumulative Effect Period Of Adoption Adjustment [Member]
Balance			2,050,204			2,188,390	2,050,204	2,188,390	2,050,204	2,188,390		2,050,204	2,188,390	2,082,757
Issuance of Common Shares														145,498
Noncontrolling interest distributions													(27,574)	(94,283)
Noncontrolling interest contributions													52,174	161,365
Comprehensive (loss) income														(13,519)
Net Income (Loss)													(124,345)
Cumulative effect of change in accounting principle						(400)				(400)			(400)
Acquisition Of Noncontrolling Interest													588
Repurchase of Common Shares													(22,386)
Dividends/distributions declared													(27,155)	(103,434)
Employee and trustee stock compensation, net													10,912	10,006
As Restated [Member] | Cumulative Effect Period Of Adoption Adjustment [Member] | Common Shares
Balance			$ 86			$ 87	$ 86	$ 87	$ 86	$ 87		$ 86	$ 87	$ 82
Balance (in Shares)			86,269			87,050,000	86,269	87,050,000	86,269	87,050,000		86,269	87,050,000	81,557
Issuance of Common Shares (in Shares)														5,164
Issuance of Common Shares														$ 5
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership (in Shares)													408	308
Repurchase of Common Shares													$ 1
Repurchase of Common Shares (in shares)													1,219
Employee and trustee stock compensation, net (in Shares)													30	21
As Restated [Member] | Cumulative Effect Period Of Adoption Adjustment [Member] | Additional Paid-in Capital
Balance			$ 1,683,165			$ 1,706,357	$ 1,683,165	$ 1,706,357	$ 1,683,165	$ 1,706,357		$ 1,683,165	$ 1,706,357	$ 1,548,603
Issuance of Common Shares														145,493
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership													6,544	5,104
Reallocation of noncontrolling interests													7,197	6,611
Acquisition Of Noncontrolling Interest													(15,330)
Repurchase of Common Shares													(22,385)
Employee and trustee stock compensation, net													782	546
As Restated [Member] | Cumulative Effect Period Of Adoption Adjustment [Member] | Accumulated Other Comprehensive Income (Loss)
Balance			(74,891)			(31,474)	(74,891)	(31,474)	(74,891)	(31,474)		(74,891)	(31,474)	516
Comprehensive (loss) income													(43,417)	(31,990)
As Restated [Member] | Cumulative Effect Period Of Adoption Adjustment [Member] | Distributions in Excess of Accumulated Earnings
Balance			(167,321)			(133,019)	(167,321)	(133,019)	(167,321)	(133,019)		(167,321)	(133,019)	(90,426)
Comprehensive (loss) income														53,717
Net Income (Loss)													(8,976)
Cumulative effect of change in accounting principle						(389)				(389)			(389)
Dividends/distributions declared													(24,937)	(96,310)
As Restated [Member] | Cumulative Effect Period Of Adoption Adjustment [Member] | Total Common Shareholders' Equity
Balance			1,441,039			1,541,951	1,441,039	1,541,951	1,441,039	1,541,951		1,441,039	1,541,951	1,458,775
Issuance of Common Shares														145,498
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership													6,544	5,104
Comprehensive (loss) income														21,727
Net Income (Loss)													(52,393)
Reallocation of noncontrolling interests													7,197	6,611
Cumulative effect of change in accounting principle						(389)				(389)			(389)
Acquisition Of Noncontrolling Interest													(15,330)
Repurchase of Common Shares													(22,386)
Dividends/distributions declared													(24,937)	(96,310)
Employee and trustee stock compensation, net													782	546
As Restated [Member] | Cumulative Effect Period Of Adoption Adjustment [Member] | Noncontrolling Interests
Balance			$ 609,165			646,439	$ 609,165	$ 646,439	$ 609,165	646,439		$ 609,165	646,439	623,982
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership													(6,544)	(5,104)
Noncontrolling interest distributions													(27,574)	(94,283)
Noncontrolling interest contributions													52,174	161,365
Comprehensive (loss) income														(35,246)
Net Income (Loss)													(71,952)
Reallocation of noncontrolling interests													(7,197)	(6,611)
Cumulative effect of change in accounting principle						$ (11)				$ (11)			(11)
Acquisition Of Noncontrolling Interest													15,918
Repurchase of Common Shares													0
Dividends/distributions declared													2,218	(7,124)
Employee and trustee stock compensation, net													$ 10,130	$ 9,460

[1] Adjustment reflects the difference between the fair value of the consideration received or paid and the book value of the Common Shares, Common OP Units, Preferred OP Units, and LTIP Units involving changes in ownership.