CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ (17,641)	$ (2,101)	$ 4,743
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	106,208	93,110	76,596
(Gain) loss on sale of real estate, land, and other investments	(41)	(27,518)	(25,503)
Realized (gain) loss on marketable securities	0	0	3,378
Share-based compensation expense	2,615	2,689	2,106
(Gain) loss on interest rate swap termination, amortization, and mark-to-market	(118)	4,931	0
Provision for bad debt	1,355	2,304	2,332
Other, net	(392)	265	1,333
Changes in other assets and liabilities:
Other assets	(645)	(5,402)	(4,818)
Accounts payable and accrued expenses	650	15,750	1,061
Net cash provided (used) by operating activities	91,991	84,028	61,228
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from repayment of mortgage loans receivable	0	0	10,020
Proceeds from sale of marketable securities	0	0	3,856
Increase in mortgages and notes receivable	0	(18,614)	(24,862)
Proceeds from sale of real estate and other investments	41	61,334	43,686
Payments for acquisitions of real estate assets	(104,666)	(273,566)	(168,696)
Payments for improvements of real estate assets	(56,568)	(31,303)	(28,638)
Payments for non-real estate assets	(122)	(1,264)	(1,677)
Other investing activities	1,221	(3,812)	1,346
Net cash provided (used) by investing activities	(160,094)	(267,225)	(164,965)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from mortgages payable	0	196,725	0
Principal payments on mortgages payable	(28,960)	(36,282)	(33,422)
Proceeds from revolving lines of credit	191,860	258,580	155,028
Principal payments on revolving lines of credit	(154,360)	(335,451)	(52,235)
Net proceeds from notes payable and other debt	99,529	174,544	0
Principal payments on notes payable and other debt	0	(145,000)	0
Payments for termination of interest rate swaps	(3,209)	(3,804)	0
Proceeds from sale of common shares, net of issuance costs	31,439	156,038	58,852
Payments for acquisition of noncontrolling interests – consolidated real estate entities	0	0	(12,221)
Repurchase of common shares	(29,059)	0	0
Repurchase of preferred shares	0	0	(5,629)
Repurchase of partnership units	(4,141)	0	(50)
Distributions paid to common shareholders	(44,461)	(38,487)	(35,045)
Distributions paid to preferred shareholders	(6,428)	(6,428)	(6,528)
Distributions paid to noncontrolling interests – Operating Partnership and Series E preferred units	(9,797)	(4,916)	(2,900)
Distributions paid to preferred unitholders	(640)	(640)	(640)
Other financing activities	(404)	(367)	(280)
Net cash provided (used) by financing activities	41,369	214,512	64,930
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH	(26,734)	31,315	(38,807)
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT BEGINNING OF YEAR	38,625	7,310	46,117
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT END OF YEAR	11,891	38,625	7,310
SUPPLEMENTARY SCHEDULE OF NON-CASH INVESTING AND FINANCING ACTIVITIES
Accrued capital expenditures	6,008	5,253	4,302
Operating partnership units converted to common shares	(1,353)	(4,714)	(1,750)
Distributions declared but not paid	11,625	11,411	9,802
Retirement of shares withheld for taxes	1,284	933	0
Real estate assets acquired through assumption of debt	41,623	20,000	0
Real estate assets acquired through issuance of operating partnership units	22,882	0	0
Fair value adjustment to debt	1,224	2,367	0
Series E preferred units converted to common shares	(3,667)	0	0
Change in value of Series D preferred units	8,771	(8,771)	0
Real estate assets acquired through exchange of note receivable	43,276	0	17,663
Note receivable exchanged through real estate acquisition	(43,276)	0	(17,663)
Real estate acquired through issuance of Series E preferred units	0	217,513	0
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash paid for interest	31,272	26,528	26,051
Cash and cash equivalents	10,458	31,267	392
Restricted cash	1,433	7,358	6,918
Total cash, cash equivalents and restricted cash	$ 11,891	$ 38,625	$ 7,310