Note 12 - Reportable Operating Segments - Financial Results for Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating income (loss)	$ (502)	$ (658)
Operating Segments [Member]
Operating revenues	2,248	2,059
Operating income (loss)	907	710
Operating Segments [Member] | Real Estate Segment [Member]
Operating revenues	0	0
Operating income (loss)	(90)	(97)
Operating Segments [Member] | Leasing Segment [Member]
Operating revenues	2,031	1,801
Operating income (loss)	1,290	961
Operating Segments [Member] | Resort Amenities Segment [Member]
Operating revenues	217	258
Operating income (loss)	$ (293)	$ (154)