Note 11 - Reportable Operating Segments - Financial Results for Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating income (loss)	$ (658)	$ (994)
Operating Segments [Member]
Operating revenues	2,059	2,035
Operating income (loss)	710	514
Operating Segments [Member] | Real Estate Segment [Member]
Operating revenues		69
Operating income (loss)	(97)	(106)
Operating Segments [Member] | Leasing Segment [Member]
Operating revenues	1,801	1,736
Operating income (loss)	961	960
Operating Segments [Member] | Resort Amenities Segment [Member]
Operating revenues	258	230
Operating income (loss)	$ (154)	$ (340)