CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Series C Preferred Stock	Series E Preferred Units	PREFERRED SHARES	COMMON SHARES	ACCUMULATED DISTRIBUTIONS IN EXCESS OF NET INCOME	ACCUMULATED DISTRIBUTIONS IN EXCESS OF NET INCOME Series C Preferred Stock	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	NONCONTROLLING INTERESTS	NONCONTROLLING INTERESTS Series E Preferred Units
Beginning balance at Dec. 31, 2020	$ 672,823			$ 93,530	$ 968,263	$ (427,681)		$ (15,905)	$ 54,616
Beginning balance (in shares) at Dec. 31, 2020					13,027
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to controlling interests and noncontrolling interests	17,624					16,671			953
Change in fair value of derivatives	3,841							3,841
Distributions - common shares and units	(20,368)					(19,086)			(1,282)
Distributions - Series C preferred shares	(3,214)	$ (3,214)					$ (3,214)
Share-based compensation, net of forfeitures (in shares)					27
Share-based compensation, net of forfeitures	1,487				$ 1,487
Sale of common shares, net (in shares)					896
Sale of common shares, net	66,356				$ 66,356
Redemption of units for common shares (in shares)					95
Redemption of units for common shares	0				$ 418				(418)
Change in redemption value of Series D preferred units	(1,462)				(1,462)
Other	(1,201)				(1,122)				(79)
Ending balance at Jun. 30, 2021	735,886			93,530	$ 1,033,940	(433,310)		(12,064)	53,790
Ending balance (in shares) at Jun. 30, 2021					14,045
Beginning balance at Mar. 31, 2021	671,452			93,530	$ 980,453	(443,409)		(12,798)	53,676
Beginning balance (in shares) at Mar. 31, 2021					13,220
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to controlling interests and noncontrolling interests	22,943					21,538			1,405
Change in fair value of derivatives	734							734
Distributions - common shares and units	(10,449)					(9,832)			(617)
Distributions - Series C preferred shares	(1,607)	(1,607)					(1,607)
Share-based compensation, net of forfeitures (in shares)					24
Share-based compensation, net of forfeitures	678				$ 678
Sale of common shares, net (in shares)					732
Sale of common shares, net	54,574				$ 54,574
Redemption of units for common shares (in shares)					69
Redemption of units for common shares	0				$ 638				(638)
Change in redemption value of Series D preferred units	(1,462)				(1,462)
Other	(977)				(941)				(36)
Ending balance at Jun. 30, 2021	735,886			93,530	$ 1,033,940	(433,310)		(12,064)	53,790
Ending balance (in shares) at Jun. 30, 2021					14,045
Beginning balance at Dec. 31, 2021	996,280			93,530	$ 1,157,255	(474,318)		(4,435)	224,248
Beginning balance (in shares) at Dec. 31, 2021					15,016
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to controlling interests and noncontrolling interests	(14,626)					(11,580)			(3,046)
Change in fair value of derivatives	2,073							2,073
Distributions - common shares and units	(23,894)					(22,440)			(1,454)
Distributions - Series C preferred shares	(3,214)	(3,214)					(3,214)
Distributions - Series E preferred stock			$ (3,515)							$ (3,515)
Share-based compensation, net of forfeitures (in shares)					25
Share-based compensation, net of forfeitures	1,199				$ 1,199
Sale of common shares, net (in shares)					321
Sale of common shares, net	31,569				$ 31,569
Issuance of units	22,882				$ 13,023				9,859
Redemption of units for common shares (in shares)					11
Redemption of units for common shares	0				$ (375)				375
Redemption of units for cash	(3,230)								(3,230)
Change in redemption value of Series D preferred units	6,704				6,704
Shares withheld for taxes	(1,273)				(1,273)
Other	(337)				(253)				(84)
Ending balance at Jun. 30, 2022	1,010,618			93,530	$ 1,207,849	(511,552)		(2,362)	223,153
Ending balance (in shares) at Jun. 30, 2022					15,373
Beginning balance at Mar. 31, 2022	1,025,906			93,530	$ 1,203,685	(495,732)		(2,550)	226,973
Beginning balance (in shares) at Mar. 31, 2022					15,366
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to controlling interests and noncontrolling interests	(3,903)					(2,991)			(912)
Change in fair value of derivatives	188							188
Distributions - common shares and units	(11,948)					(11,222)			(726)
Distributions - Series C preferred shares	(1,607)	$ (1,607)					$ (1,607)
Distributions - Series E preferred stock			$ (1,758)							$ (1,758)
Share-based compensation, net of forfeitures (in shares)					6
Share-based compensation, net of forfeitures	480				$ 480
Redemption of units for common shares (in shares)					1
Redemption of units for common shares	0				$ 13				(13)
Redemption of units for cash	(327)								(327)
Change in redemption value of Series D preferred units	3,785				3,785
Other	(198)				(114)				(84)
Ending balance at Jun. 30, 2022	$ 1,010,618			$ 93,530	$ 1,207,849	$ (511,552)		$ (2,362)	$ 223,153
Ending balance (in shares) at Jun. 30, 2022					15,373