Note 11 - Reportable Operating Segments - Financial Results for Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Operating income (loss)	$ 2,096	$ (762)	$ 1,438	$ (1,756)
Operating Segments [Member]
Operating revenues	4,950	1,710	7,009	3,744
Operating income (loss)	3,342	522	4,050	1,034
Operating Segments [Member] | Real Estate Segment [Member]
Operating revenues	2,700	90	2,700	158
Operating income (loss)	2,246	(102)	2,148	(209)
Operating Segments [Member] | Leasing Segment [Member]
Operating revenues	1,962	1,436	3,763	3,172
Operating income (loss)	1,086	609	2,047	1,569
Operating Segments [Member] | Resort Amenities Segment [Member]
Operating revenues	288	184	546	414
Operating income (loss)	$ 10	$ 15	$ (145)	$ (326)