BUSINESS SEGMENT DATA - Summary of Operations in Different Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
BUSINESS SEGMENT DATA
Total Revenues	$ 28,470	$ 23,117	$ 79,234	$ 59,790
Total Operating Income	7,685	10,756	16,325	19,262
Provision for Impairment	(929)		(1,408)	0
Gain on Disposition of Assets	2,464	4,973	3,565	4,728
Depreciation and Amortization	11,669	7,305	32,814	20,401
Capital Expenditures	11,064	86,654	118,065	180,999
Operating Segments
BUSINESS SEGMENT DATA
Provision for Impairment	(929)		(1,408)
Gain on Disposition of Assets	2,464	4,973	3,565	4,728
General and Corporate Expense
BUSINESS SEGMENT DATA
Total Operating Income	(15,108)	(10,558)	(43,307)	(29,373)
Depreciation and Amortization	18	22	45	42
Capital Expenditures	4	160	255	195
Income Properties
BUSINESS SEGMENT DATA
Total Revenues	25,183	17,694	70,373	49,229
Provision for Impairment		0		0
Income Properties | Operating Segments
BUSINESS SEGMENT DATA
Total Operating Income	18,123	12,579	49,490	35,286
Depreciation and Amortization	11,651	7,283	32,769	20,359
Capital Expenditures	11,010	83,240	100,333	130,674
Management Fee Income
BUSINESS SEGMENT DATA
Total Revenues	1,094	951	3,294	2,835
Management Fee Income | Operating Segments
BUSINESS SEGMENT DATA
Total Operating Income	1,094	951	3,294	2,835
Capital Expenditures			0	0
Interest Income From Commercial Loans and Investments
BUSINESS SEGMENT DATA
Total Revenues	1,114	1,323	2,965	3,331
Provision for Impairment			(500)	0
Interest Income From Commercial Loans and Investments | Operating Segments
BUSINESS SEGMENT DATA
Total Operating Income	1,114	1,323	2,965	3,331
Capital Expenditures	50	3,254	17,477	50,130
Real Estate Operations
BUSINESS SEGMENT DATA
Total Revenues	1,079	3,149	2,602	4,395
Capital Expenditures			0	0
Real Estate Operations | Operating Segments
BUSINESS SEGMENT DATA
Total Operating Income	$ 927	$ 1,488	$ 1,726	$ 2,455