Note 13 - Business Segment Information - Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Revenue from Contract with Customer, Excluding Assessed Tax, Total	$ 16,625	$ 18,018	$ 44,095	$ 51,051
Income (loss) before income taxes	800	164	(409)	53
Interest expense	(302)	(222)	(913)	(600)
Other income, net	83	41	264	257
Income (loss) before income taxes	800	164	(409)	53
Total Assets	78,027		78,027		$ 79,164
Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	16,632	18,028	44,132	51,096
Income (loss) before income taxes	1,873	1,174	2,811	2,932
Income (loss) before income taxes	1,873	1,174	2,811	2,932
Total Assets	147,149		147,149		145,581
Intersegment Eliminations [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	(7)	(10)	(37)	(45)
Total Assets	(69,122)		(69,122)		(66,417)
Corporate, Non-Segment [Member]
Interest expense	(293)	(203)	(883)	(551)
Other income, net	9	3	22	51
General corporate expenses	(789)	(810)	(2,359)	(2,379)
Total Assets	59,693		59,693		58,638
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] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	9,326	11,572	29,547	35,908
Income (loss) before income taxes	855	1,074	2,710	3,295
Income (loss) before income taxes	855	1,074	2,710	3,295
Total Assets	29,787		29,787		31,574
Waste Management Services [Member] | Intersegment Eliminations [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total
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] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	7,306	6,456	14,585	15,188
Income (loss) before income taxes	1,018	100	101	(363)
Income (loss) before income taxes	1,018	100	101	(363)
Total Assets	57,669		57,669		$ 55,369
Golf and Related Operations [Member] | Intersegment Eliminations [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	$ 7	$ 10	$ 37	$ 45