Note 5 - Revenues - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Total net operating revenues	$ 23,903	$ 25,713	$ 62,898	$ 59,544
Operating Segments [Member]
Total net operating revenues	23,917	25,738	62,962	59,600
Waste Management Services [Member]
Total net operating revenues	11,744	15,036	34,694	35,092
Waste Management Services [Member] | Operating Segments [Member]
Total net operating revenues	11,744	15,036	34,694	35,092
Waste Management Services [Member] | Waste Brokerage And Management Services Member
Total net operating revenues	11,059	14,377	32,358	33,131
Waste Management Services [Member] | Captive Landfill Management Operations [Member]
Total net operating revenues	685	659	2,336	1,961
Golf and Related Operations [Member]
Total net operating revenues	12,173	10,702	28,268	24,508
Golf and Related Operations [Member] | Operating Segments [Member]
Total net operating revenues	12,159	10,677	28,204	24,452
Golf and Related Operations [Member] | Food and Beverage [Member]
Total net operating revenues	4,609	4,077	10,577	9,305
Golf and Related Operations [Member] | Membership Dues [Member]
Total net operating revenues	1,793	1,783	5,473	5,291
Golf and Related Operations [Member] | Room Rental [Member]
Total net operating revenues	2,483	2,179	5,125	4,383
Golf and Related Operations [Member] | Green Fees and Cart Rental [Member]
Total net operating revenues	1,785	1,596	3,027	2,601
Golf and Related Operations [Member] | Salon and Spa Services [Member]
Total net operating revenues	72	474	317	1,360
Golf and Related Operations [Member] | Fitness and Tennis Lesson [Member]
Total net operating revenues	783	83	2,266	332
Golf and Related Operations [Member] | Other Revenue [Member]
Total net operating revenues	$ 634	$ 485	$ 1,419	$ 1,180