CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ 49,231	$ (17,641)	$ (2,101)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization, including amortization of capitalized loan costs	103,172	106,208	93,110
Gain on sale of real estate, land, and other investments	(71,240)	(41)	(27,518)
Share-based compensation expense	3,295	2,615	2,689
Impairment of real estate investments	5,218	0	0
(Gain) loss on interest rate swap termination, amortization, and mark-to-market	936	(118)	4,931
Provision for bad debt	340	1,355	2,304
Other, net	1,436	(392)	265
Changes in other assets and liabilities:
Other assets	(760)	(645)	(5,402)
Accounts payable and accrued expenses	(2,108)	650	15,750
Net cash provided by operating activities	89,520	91,991	84,028
CASH FLOWS FROM INVESTING ACTIVITIES
Increase in mortgages and real estate related notes receivable	(1,579)	0	(18,614)
Net proceeds from sale of real estate and other investments	223,259	41	61,334
Payments for acquisitions of real estate assets	(42,226)	(104,666)	(273,566)
Payments for improvements of real estate assets	(58,825)	(56,568)	(31,303)
Payments for non-real estate assets	0	(122)	(1,264)
Other investing activities	(420)	1,221	(3,812)
Net cash provided by (used by) investing activities	120,209	(160,094)	(267,225)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from mortgages payable	90,000	0	196,725
Principal payments on mortgages payable	(46,749)	(28,960)	(36,282)
Proceeds from revolving lines of credit	135,104	191,860	258,580
Principal payments on revolving lines of credit	(218,604)	(154,360)	(335,451)
Net proceeds from notes payable and other debt	0	99,529	174,544
Principal payments on notes payable and other debt	(100,000)	0	(145,000)
Payments for termination of interest rate swaps	0	(3,209)	(3,804)
Proceeds from sale of common shares, net of issuance costs	0	31,439	156,038
Repurchase of common shares	(11,539)	(29,059)	0
Repurchase of partnership units	(38)	(4,141)	0
Distributions paid to common shareholders	(43,742)	(44,461)	(38,487)
Distributions paid to preferred shareholders	(6,428)	(6,428)	(6,428)
Distributions paid to noncontrolling interests – Operating Partnership and Series E preferred units	(9,530)	(9,797)	(4,916)
Distributions paid to preferred unitholders	(640)	(640)	(640)
Other financing activities	(185)	(404)	(367)
Net cash provided by (used by) financing activities	(212,351)	41,369	214,512
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH	(2,622)	(26,734)	31,315
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT BEGINNING OF YEAR	11,891	38,625	7,310
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT END OF YEAR	9,269	11,891	38,625
SUPPLEMENTARY SCHEDULE OF NON-CASH INVESTING AND FINANCING ACTIVITIES
Accrued capital expenditures	9,747	6,008	5,253
Operating partnership units converted to common shares	(1,910)	(1,353)	(4,714)
Distributions declared but not paid	11,552	11,625	11,411
Retirement of shares withheld for taxes	190	1,284	933
Loss on litigation settlement	1,000	0	0
Involuntary conversion of assets	(4,224)	0	0
Real estate assets acquired through assumption of debt	52,723	41,623	20,000
Real estate assets acquired through issuance of operating partnership units	0	22,882	0
Fair value adjustment to debt	(3,924)	1,224	2,367
Series E preferred units converted to common shares	(1,390)	(3,667)	0
Change in value of Series D preferred units	0	8,771	(8,771)
Real estate assets acquired through exchange of note receivable	0	43,276	0
Note receivable exchanged through real estate acquisition	0	(43,276)	0
Real estate acquired through issuance of Series E preferred units	0	0	217,513
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash paid for interest	34,182	31,272	26,528
Cash and cash equivalents	8,630	10,458	31,267
Restricted cash	639	1,433	7,358
Total cash, cash equivalents and restricted cash	$ 9,269	$ 11,891	$ 38,625