Note 13 - Business Segment Information - Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Total Assets	$ 90,603		$ 87,965
Total net operating revenues	18,858	$ 18,445
Total Assets	90,603		87,965
Waste management services	(1,014)	(1,768)
Operating revenues	18,858	18,445
Waste Management Services [Member]
Total net operating revenues	12,470	12,652
Operating revenues	12,470	12,652
Golf and Related Operations [Member]
Total net operating revenues	6,392	5,802
Operating revenues	6,392	5,802
Operating Segments [Member]
Total net operating revenues	18,862	18,454
Waste management services	470	(343)
Operating revenues	18,862	18,454
Operating Segments [Member] | Waste Management Services [Member]
Total Assets	37,988		35,839
Total net operating revenues	12,470	12,652
Total Assets	37,988		35,839
Waste management services	1,221	949
Operating revenues	12,470	12,652
Operating Segments [Member] | Golf and Related Operations [Member]
Total Assets	65,763		63,670
Total net operating revenues	6,388	5,793
Total Assets	65,763		63,670
Waste management services	(751)	(1,292)
Operating revenues	6,388	5,793
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Total Assets	64,310		65,453
Total Assets	64,310		65,453
Corporate interest expense, net	(515)	(496)
General corporate expenses	(969)	(929)
Operating Segments and Corporate Non Segment [Member]
Total Assets	168,061		164,962
Total Assets	168,061		164,962
Intersegment Eliminations [Member]
Total Assets	(77,458)		(76,997)
Total net operating revenues	(4)	(9)
Total Assets	(77,458)		$ (76,997)
Operating revenues	(4)	(9)
Intersegment Eliminations [Member] | Waste Management Services [Member]
Total net operating revenues	0	0
Operating revenues	0	0
Intersegment Eliminations [Member] | Golf and Related Operations [Member]
Total net operating revenues	4	9
Operating revenues	$ 4	$ 9