Note 5 - Revenues - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Revenue from Contract with Customer, Excluding Assessed Tax	$ 25,746	$ 24,235	$ 62,067	$ 66,150
Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	25,746	24,235	62,067	66,150
Waste Management Services [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	12,918	11,461	32,338	36,151
Waste Management Services [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	12,918	11,461	32,338	36,151
Waste Management Services [Member] | Waste Brokerage And Management Services Member | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	12,156	10,752	29,821	33,976
Waste Management Services [Member] | Captive Landfill Management Operations [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	762	709	2,517	2,175
Golf and Related Operations [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	12,828	12,774	29,729	29,999
Golf and Related Operations [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	12,828	12,774	29,729	29,999
Golf and Related Operations [Member] | Food and Beverage [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	4,553	4,615	10,337	10,622
Golf and Related Operations [Member] | Food and Beverage [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	4,553	4,615	10,337	10,622
Golf and Related Operations [Member] | Membership Dues [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,770	1,801	5,431	5,614
Golf and Related Operations [Member] | Room Rental [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	2,870	2,846	5,974	5,893
Golf and Related Operations [Member] | Green Fees and Cart Rental [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,911	1,784	3,030	3,022
Golf and Related Operations [Member] | Salon and Spa Services [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	936	1,015	2,865	2,805
Golf and Related Operations [Member] | Fitness and Tennis Lesson [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	51	55	160	243
Golf and Related Operations [Member] | Other Revenue [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 737	$ 658	$ 1,932	$ 1,800