Note 5 - Revenues - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenue from Contract with Customer, Excluding Assessed Tax, Total	$ 16,625	$ 18,018	$ 44,095	$ 51,051
Waste Management Services [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	9,326	11,572	29,547	35,908
Waste Management Services [Member] | Waste Brokerage And Management Services Member
Revenue from Contract with Customer, Excluding Assessed Tax, Total	8,792	10,867	27,818	33,853
Waste Management Services [Member] | Captive Landfill Management Operations [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	534	705	1,729	2,055
Golf and Related Operations [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	7,299	6,446	14,548	15,143
Golf and Related Operations [Member] | Food and Beverage [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	2,851	2,587	5,247	6,027
Golf and Related Operations [Member] | Membership Dues [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	1,522	1,474	4,540	4,220
Golf and Related Operations [Member] | Room Rental [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	1,132	814	1,725	1,808
Golf and Related Operations [Member] | Green Fees and Cart Rental [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	1,332	1,098	1,998	1,755
Golf and Related Operations [Member] | Other Revenue [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	$ 462	$ 473	$ 1,038	$ 1,333