CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Thousands	Total	Preferred Shares	Common Shares	Additional Paid-in-Capital	Accumulated Distributions in Excess of Net Income	Accumulated Other Comprehensive Income/(Loss)	Noncontrolling Interests
Beginning balance at Dec. 31, 2021	$ 2,323,228	$ 94,016	$ 28	$ 3,252,506	$ (1,049,434)	$ (6,258)	$ 32,370
Beginning balance (in shares) at Dec. 31, 2021		1,935,400	283,752,726
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of partnership interest in real estate	6,444						6,444
Redemption of noncontrolling OP units for common shares	0			177			(177)
Redemption of noncontrolling OP units for common shares (in shares)			33,378
Purchase of noncontrolling interest in consolidated joint venture	(27,958)			(25,058)			(2,900)
Issuance of common shares and deferred compensation amortization, net	44,075		$ 1	44,074
Issuance of common shares and deferred compensation amortization, net (in shares)			4,557,892
Repurchase of common shares	(130,676)		$ (1)	(130,675)
Repurchase of common shares (in shares)			(11,702,074)
Repurchase of common shares to settle tax obligations	(6,285)			(6,285)
Repurchase of common shares to settle tax obligations (in shares)			(410,958)
Forfeiture of employee common shares	9				9
Forfeiture of employee common shares (in shares)			(130,633)
Dividends/distributions	(106,388)				(105,292)		(1,096)
Net income	76,037				75,310		727
Other comprehensive income (loss)	22,844					22,844
Company's share of other comprehensive income (loss) of non-consolidated entities	1,182					1,182
Ending balance at Sep. 30, 2022	2,202,512	$ 94,016	$ 28	3,134,739	(1,079,407)	17,768	35,368
Ending balance (in shares) at Sep. 30, 2022		1,935,400	276,100,331
Beginning balance at Jun. 30, 2022	2,259,650	$ 94,016	$ 28	3,189,713	(1,068,408)	9,558	34,743
Beginning balance (in shares) at Jun. 30, 2022		1,935,400	281,670,437
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of partnership interest in real estate	663						663
Redemption of noncontrolling OP units for common shares	0			68			(68)
Redemption of noncontrolling OP units for common shares (in shares)			13,146
Issuance of common shares and deferred compensation amortization, net	1,916			1,916
Issuance of common shares and deferred compensation amortization, net (in shares)			22,516
Repurchase of common shares	(56,958)			(56,958)
Repurchase of common shares (in shares)			(5,604,048)
Forfeiture of employee common shares	1				1
Forfeiture of employee common shares (in shares)			(1,720)
Dividends/distributions	(34,561)				(34,390)		(171)
Net income	23,591				23,390		201
Other comprehensive income (loss)	7,028					7,028
Company's share of other comprehensive income (loss) of non-consolidated entities	1,182					1,182
Ending balance at Sep. 30, 2022	2,202,512	$ 94,016	$ 28	3,134,739	(1,079,407)	17,768	35,368
Ending balance (in shares) at Sep. 30, 2022		1,935,400	276,100,331
Beginning balance at Dec. 31, 2022	2,391,003	$ 94,016	$ 29	3,320,087	(1,079,087)	17,689	38,269
Beginning balance (in shares) at Dec. 31, 2022		1,935,400	291,719,310
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of partnership interest in real estate	507						507
Redemption of noncontrolling OP units for common shares	0			49			(49)
Redemption of noncontrolling OP units for common shares (in shares)			9,944
Issuance of common shares and deferred compensation amortization, net	6,730			6,730
Issuance of common shares and deferred compensation amortization, net (in shares)			1,263,180
Repurchase of common shares to settle tax obligations	(2,076)			(2,076)
Repurchase of common shares to settle tax obligations (in shares)			(204,780)
Forfeiture of employee common shares (in shares)			(176,547)
Dividends/distributions	(115,133)				(113,907)		(1,226)
Net income	16,436				15,782		654
Other comprehensive income (loss)	(2,474)					(2,474)
Company's share of other comprehensive income (loss) of non-consolidated entities	(853)					(853)
Ending balance at Sep. 30, 2023	2,294,140	$ 94,016	$ 29	3,324,790	(1,177,212)	14,362	38,155
Ending balance (in shares) at Sep. 30, 2023		1,935,400	292,611,107
Beginning balance at Jun. 30, 2023	2,318,723	$ 94,016	$ 29	3,322,499	(1,151,924)	16,200	37,903
Beginning balance (in shares) at Jun. 30, 2023		1,935,400	292,581,929
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of partnership interest in real estate	211						211
Redemption of noncontrolling OP units for common shares	0			24			(24)
Redemption of noncontrolling OP units for common shares (in shares)			5,058
Issuance of common shares and deferred compensation amortization, net	2,267			2,267
Issuance of common shares and deferred compensation amortization, net (in shares)			24,120
Dividends/distributions	(38,124)				(37,952)		(172)
Net income	12,901				12,664		237
Other comprehensive income (loss)	(1,423)					(1,423)
Company's share of other comprehensive income (loss) of non-consolidated entities	(415)					(415)
Ending balance at Sep. 30, 2023	$ 2,294,140	$ 94,016	$ 29	$ 3,324,790	$ (1,177,212)	$ 14,362	$ 38,155
Ending balance (in shares) at Sep. 30, 2023		1,935,400	292,611,107