BUSINESS SEGMENT DATA - Identifiable Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
BUSINESS SEGMENT DATA
Total Assets	$ 989,668	$ 986,545
Corporate and Other
BUSINESS SEGMENT DATA
Total Assets	36,486	46,438
Income Properties | Operating Segments
BUSINESS SEGMENT DATA
Total Assets	887,345	902,427
Management Services | Operating Segments
BUSINESS SEGMENT DATA
Total Assets	1,395	1,370
Commercial Loans and Investments | Operating Segments
BUSINESS SEGMENT DATA
Total Assets	62,099	32,269
Real Estate Operations | Operating Segments
BUSINESS SEGMENT DATA
Total Assets	$ 2,343	$ 4,041