Note 5 - Revenues - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Total net operating revenues	$ 20,621	$ 19,522	$ 38,995	$ 33,831
Operating Segments [Member]
Total net operating revenues	20,638	19,552	39,021	33,862
Waste Management Services [Member]
Total net operating revenues	10,298	10,717	22,950	20,056
Waste Management Services [Member] | Operating Segments [Member]
Total net operating revenues	10,298	10,717	22,950	20,056
Waste Management Services [Member] | Waste Brokerage And Management Services Member
Total net operating revenues	9,427	10,028	21,299	18,754
Waste Management Services [Member] | Captive Landfill Management Operations [Member]
Total net operating revenues	871	689	1,651	1,302
Golf and Related Operations [Member]
Total net operating revenues	10,340	8,835	16,071	13,806
Golf and Related Operations [Member] | Operating Segments [Member]
Total net operating revenues	10,323	8,805	16,045	13,775
Golf and Related Operations [Member] | Food and Beverage [Member]
Total net operating revenues	3,995	3,563	5,968	5,228
Golf and Related Operations [Member] | Membership Dues [Member]
Total net operating revenues	1,833	1,794	3,680	3,508
Golf and Related Operations [Member] | Room Rental [Member]
Total net operating revenues	1,768	1,469	2,642	2,204
Golf and Related Operations [Member] | Green Fees and Cart Rental [Member]
Total net operating revenues	1,186	950	1,242	1,005
Golf and Related Operations [Member] | Salon and Spa Services [Member]
Total net operating revenues	883	478	1,483	886
Golf and Related Operations [Member] | Fitness and Tennis Lesson [Member]
Total net operating revenues	91	111	245	249
Golf and Related Operations [Member] | Other Revenue [Member]
Total net operating revenues	$ 567	$ 440	$ 785	$ 695