Note 5 - Revenues - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Total net operating revenues	$ 23,057	$ 20,826	$ 41,915	$ 39,281
Operating Segments [Member]
Total net operating revenues	23,079	20,843	41,941	39,331
Waste Management Services [Member]
Total net operating revenues	12,220	10,298	24,690	22,950
Waste Management Services [Member] | Operating Segments [Member]
Total net operating revenues	12,220	10,298	24,690	22,950
Waste Management Services [Member] | Waste Brokerage And Management Services Member
Total net operating revenues	11,437	9,427	23,224	21,299
Waste Management Services [Member] | Captive Landfill Management Operations [Member]
Total net operating revenues	783	871	1,466	1,651
Golf and Related Operations [Member]
Total net operating revenues	10,859	10,545	17,251	16,381
Golf and Related Operations [Member] | Operating Segments [Member]
Total net operating revenues	10,837	10,528	17,225	16,331
Golf and Related Operations [Member] | Food and Beverage [Member]
Total net operating revenues	3,996	3,994	6,007	5,968
Golf and Related Operations [Member] | Food and Beverage [Member] | Operating Segments [Member]
Total net operating revenues	3,996	3,995	6,007	5,968
Golf and Related Operations [Member] | Membership Dues [Member]
Total net operating revenues	1,839	1,833	3,813	3,680
Golf and Related Operations [Member] | Room Rental [Member]
Total net operating revenues	2,052	1,768	3,047	2,642
Golf and Related Operations [Member] | Green Fees and Cart Rental [Member]
Total net operating revenues	1,169	1,186	1,238	1,242
Golf and Related Operations [Member] | Salon and Spa Services [Member]
Total net operating revenues	991	883	1,790	1,483
Golf and Related Operations [Member] | Fitness and Tennis Lesson [Member]
Total net operating revenues	79	91	188	245
Golf and Related Operations [Member] | Other Revenue [Member]
Total net operating revenues	$ 711	$ 773	$ 1,142	$ 1,071