Note 5 - Revenues - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Revenue from Contract with Customer, Excluding Assessed Tax	$ 17,658	$ 16,068
Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	17,658	16,068
Waste Management Services [Member] \| Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	11,508	9,677
Waste Management Services [Member] \| Waste Brokerage And Management Services Member \| Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	10,750	8,775
Waste Management Services [Member] \| Captive Landfill Management Operations [Member] \| Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	758	902
Golf and Related Operations [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	6,150	6,391
Golf and Related Operations [Member] \| Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	6,150	6,391
Golf and Related Operations [Member] \| Food and Beverage [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	2,013	2,024
Golf and Related Operations [Member] \| Food and Beverage [Member] \| Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	2,013	2,024
Golf and Related Operations [Member] \| Membership Dues [Member] \| Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,848	1,833
Golf and Related Operations [Member] \| Room Rental [Member] \| Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,067	1,087
Golf and Related Operations [Member] \| Green Fees and Cart Rental [Member] \| Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	58	59
Golf and Related Operations [Member] \| Salon and Spa Services [Member] \| Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	687	904
Golf and Related Operations [Member] \| Fitness and Tennis Lesson [Member] \| Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	91	40
Golf and Related Operations [Member] \| Other Revenue [Member] \| Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 386	$ 444