Note 5 - Revenues - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue from Contract with Customer, Excluding Assessed Tax, Total	$ 19,522	$ 16,390	$ 33,831	$ 31,503
Waste Management Services [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	10,717	8,685	20,056	19,835
Waste Management Services [Member] | Waste Brokerage And Management Services Member
Revenue from Contract with Customer, Excluding Assessed Tax, Total	10,028	8,078	18,754	18,629
Waste Management Services [Member] | Captive Landfill Management Operations [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	689	607	1,302	1,206
Golf and Related Operations [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	8,805	7,705	13,775	11,668
Golf and Related Operations [Member] | Food and Beverage [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	3,563	3,283	5,228	4,624
Golf and Related Operations [Member] | Membership Dues [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	1,794	1,661	3,508	3,268
Golf and Related Operations [Member] | Room Rental [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	1,469	1,126	2,204	1,614
Golf and Related Operations [Member] | Green Fees and Cart Rental [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	950	917	1,005	1,003
Golf and Related Operations [Member] | Salon and Spa Services [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	478	255	886	422
Golf and Related Operations [Member] | Fitness and Tennis Lesson [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	111	106	249	250
Golf and Related Operations [Member] | Other Revenue [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	$ 440	$ 357	$ 695	$ 487