Note 5 - Revenues - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Total net operating revenues	$ 18,858	$ 18,445
Operating Segments [Member]
Total net operating revenues	18,862	18,454
Waste Management Services [Member]
Total net operating revenues	12,470	12,652
Waste Management Services [Member] | Operating Segments [Member]
Total net operating revenues	12,470	12,652
Waste Management Services [Member] | Waste Brokerage And Management Services Member
Total net operating revenues	11,787	11,872
Waste Management Services [Member] | Captive Landfill Management Operations [Member]
Total net operating revenues	683	780
Golf and Related Operations [Member]
Total net operating revenues	6,392	5,802
Golf and Related Operations [Member] | Operating Segments [Member]
Total net operating revenues	6,388	5,793
Golf and Related Operations [Member] | Food and Beverage [Member]
Total net operating revenues	2,011	1,974
Golf and Related Operations [Member] | Food and Beverage [Member] | Operating Segments [Member]
Total net operating revenues	2,011	1,974
Golf and Related Operations [Member] | Membership Dues [Member]
Total net operating revenues	1,974	1,847
Golf and Related Operations [Member] | Room Rental [Member]
Total net operating revenues	995	874
Golf and Related Operations [Member] | Green Fees and Cart Rental [Member]
Total net operating revenues	69	56
Golf and Related Operations [Member] | Salon and Spa Services [Member]
Total net operating revenues	799	600
Golf and Related Operations [Member] | Fitness and Tennis Lesson [Member]
Total net operating revenues	109	154
Golf and Related Operations [Member] | Other Revenue [Member]
Total net operating revenues	$ 431	$ 288