Note 5 - Revenues - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Total net operating revenues	$ 24,235	$ 23,929	$ 66,150	$ 63,178
Operating Segments [Member]
Total net operating revenues	24,255	23,943	66,196	63,242
Waste Management Services [Member]
Total net operating revenues	11,461	11,744	36,151	34,694
Waste Management Services [Member] | Operating Segments [Member]
Total net operating revenues	11,461	11,744	36,151	34,694
Waste Management Services [Member] | Waste Brokerage And Management Services Member
Total net operating revenues	10,752	11,059	33,976	32,358
Waste Management Services [Member] | Captive Landfill Management Operations [Member]
Total net operating revenues	709	685	2,175	2,336
Golf and Related Operations [Member]
Total net operating revenues	12,794	12,199	30,045	28,548
Golf and Related Operations [Member] | Operating Segments [Member]
Total net operating revenues	12,774	12,185	29,999	28,484
Golf and Related Operations [Member] | Food and Beverage [Member]
Total net operating revenues	4,615	4,609	10,622	10,577
Golf and Related Operations [Member] | Food and Beverage [Member] | Operating Segments [Member]
Total net operating revenues	4,615	4,609	10,622	10,577
Golf and Related Operations [Member] | Membership Dues [Member]
Total net operating revenues	1,801	1,793	5,614	5,473
Golf and Related Operations [Member] | Room Rental [Member]
Total net operating revenues	2,846	2,483	5,893	5,125
Golf and Related Operations [Member] | Green Fees and Cart Rental [Member]
Total net operating revenues	1,784	1,785	3,022	3,027
Golf and Related Operations [Member] | Salon and Spa Services [Member]
Total net operating revenues	1,015	783	2,805	2,266
Golf and Related Operations [Member] | Fitness and Tennis Lesson [Member]
Total net operating revenues	55	72	243	317
Golf and Related Operations [Member] | Other Revenue [Member]
Total net operating revenues	$ 658	$ 660	$ 1,800	$ 1,699