Note 5 - Revenues - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Revenue from Contract with Customer, Excluding Assessed Tax	$ 24,296	$ 25,746	$ 62,852	$ 62,067
Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	24,296	25,746	62,852	62,067
Waste Management Services [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	11,098	12,918	32,720	32,338
Waste Management Services [Member] | Waste Brokerage And Management Services Member | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	10,046	12,156	30,094	29,821
Waste Management Services [Member] | Captive Landfill Management Operations [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,052	762	2,626	2,517
Golf and Related Operations [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	13,198	12,828	30,132	29,729
Golf and Related Operations [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	13,198	12,828	30,132	29,729
Golf and Related Operations [Member] | Food and Beverage [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	4,800	4,553	10,926	10,337
Golf and Related Operations [Member] | Food and Beverage [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	4,800	4,553	10,926	10,337
Golf and Related Operations [Member] | Membership Dues [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,793	1,770	5,486	5,431
Golf and Related Operations [Member] | Room Rental [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	3,185	2,870	6,440	5,974
Golf and Related Operations [Member] | Green Fees and Cart Rental [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,992	1,911	3,229	3,030
Golf and Related Operations [Member] | Salon and Spa Services [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	531	936	1,865	2,865
Golf and Related Operations [Member] | Fitness and Tennis Lesson [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	52	51	212	160
Golf and Related Operations [Member] | Other Revenue [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 845	$ 737	$ 1,974	$ 1,932