Note 5 - Revenues - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Total net operating revenues	$ 18,375	$ 14,309
Operating Segments [Member]
Total net operating revenues	18,384	14,312
Waste Management Services [Member]
Total net operating revenues	12,652	9,339
Waste Management Services [Member] | Operating Segments [Member]
Total net operating revenues	12,652	9,339
Waste Management Services [Member] | Waste Brokerage And Management Services Member
Total net operating revenues	11,872	8,726
Waste Management Services [Member] | Captive Landfill Management Operations [Member]
Total net operating revenues	780	613
Golf and Related Operations [Member]
Total net operating revenues	5,732	4,973
Golf and Related Operations [Member] | Operating Segments [Member]
Total net operating revenues	5,723	4,970
Golf and Related Operations [Member] | Food and Beverage [Member]
Total net operating revenues	1,974	1,665
Golf and Related Operations [Member] | Membership Dues [Member]
Total net operating revenues	1,847	1,714
Golf and Related Operations [Member] | Room Rental [Member]
Total net operating revenues	874	735
Golf and Related Operations [Member] | Green Fees and Cart Rental [Member]
Total net operating revenues	56	55
Golf and Related Operations [Member] | Salon and Spa Services [Member]
Total net operating revenues	600	408
Golf and Related Operations [Member] | Fitness and Tennis Lesson [Member]
Total net operating revenues	154	138
Golf and Related Operations [Member] | Other Revenue [Member]
Total net operating revenues	$ 218	$ 255