Note 14 - Business Segment Information - Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Revenue from Contract with Customer, Excluding Assessed Tax, Total	$ 21,301	$ 16,625	$ 52,804	$ 44,095
Income (loss) before income taxes	842	800	2,312	(409)
Interest expense	(290)	(302)	(878)	(913)
Gain on debt extinguishment	0	0	1,964	0
Other income, net	85	83	298	264
Gain on debt extinguishment	0	0	1,964	0
Total Assets	78,594		78,594		$ 77,950
Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	21,316	16,632	52,836	44,132
Income (loss) before income taxes	2,084	1,873	5,729	2,811
Total Assets	148,943		148,943		149,163
Intersegment Eliminations [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	(15)	(7)	(32)	(37)
Total Assets	(70,349)		(70,349)		(71,213)
Corporate, Non-Segment [Member]
Interest expense	(282)	(293)	(845)	(883)
Gain on debt extinguishment	0	0	502	0
Other income, net	2	9	10	22
General corporate expenses	(962)	(789)	(3,084)	(2,359)
Gain on debt extinguishment	0	0	502	0
Total Assets	56,835		56,835		59,425
Waste Management Services [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	11,444	9,326	31,279	29,547
Waste Management Services [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	11,444	9,326	31,279	29,547
Income (loss) before income taxes	672	855	2,491	2,710
Gain on debt extinguishment	0	0	0	0
Gain on debt extinguishment	0	0	0	0
Total Assets	32,624		32,624		31,875
Waste Management Services [Member] | Intersegment Eliminations [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	0	0	0	0
Golf and Related Operations [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	9,857	7,299	21,525	14,548
Golf and Related Operations [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	9,872	7,306	21,557	14,585
Income (loss) before income taxes	1,412	1,018	3,238	101
Gain on debt extinguishment	0	0	1,462	0
Gain on debt extinguishment	0	0	1,462	0
Total Assets	59,484		59,484		$ 57,863
Golf and Related Operations [Member] | Intersegment Eliminations [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	$ 15	$ 7	$ 32	$ 37