Note 15 - Reportable Operating Segments - Financial Results for Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Operating Segment Revenues
Operating Segment Revenues	$ 19	$ 11,600	$ 19	$ 11,600
Operating Segment Income (Loss)
Operating Segment Income (Loss)	(1,344)	10,641	(2,714)	10,139
Operating Segments [Member]
Operating Segment Revenues
Operating Segment Revenues	2,473	13,987	4,770	16,234
Operating Segment Income (Loss)
Operating Segment Income (Loss)	735	11,953	1,608	12,859
Operating Segments [Member] | Real Estate Segment [Member]
Operating Segment Revenues
Operating Segment Revenues	19	11,600	19	11,600
Operating Segment Income (Loss)
Operating Segment Income (Loss)	(317)	10,893	(399)	10,804
Operating Segments [Member] | Leasing Segment [Member]
Operating Segment Revenues
Operating Segment Revenues	2,241	2,198	4,318	4,228
Operating Segment Income (Loss)
Operating Segment Income (Loss)	1,202	1,201	2,485	2,489
Operating Segments [Member] | Resort Amenities Segment [Member]
Operating Segment Revenues
Operating Segment Revenues	213	189	433	406
Operating Segment Income (Loss)
Operating Segment Income (Loss)	$ (150)	$ (141)	$ (478)	$ (434)