Note 14 - Business Segment Information - Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Revenue from Contract with Customer, Excluding Assessed Tax, Total	$ 16,390	$ 13,067	$ 31,503	$ 27,470
Income (loss) before income taxes	739	(423)	1,470	(1,209)
Interest expense	(291)	(304)	(588)	(611)
Gain on debt extinguishment	877	0	1,964	0
Other income, net	126	103	213	181
Total Assets	78,720		78,720		$ 77,950
Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	16,399	13,069	31,520	27,500
Income (loss) before income taxes	2,302	621	3,645	938
Total Assets	150,053		150,053		149,163
Intersegment Eliminations [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	(9)	(2)	(17)	(30)
Total Assets	(71,333)		(71,333)		(71,213)
Corporate, Non-Segment [Member]
Interest expense	(280)	(293)	(563)	(590)
Gain on debt extinguishment	0	0	502	0
Other income, net	7	11	8	13
General corporate expenses	(1,290)	(762)	(2,122)	(1,570)
Total Assets	58,423		58,423		59,425
Waste Management Services [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	8,685	9,088	19,835	20,221
Total Assets	31,900		31,900		31,900
Waste Management Services [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	8,685	9,088	19,835	20,221
Income (loss) before income taxes	676	807	1,819	1,855
Gain on debt extinguishment	0	0	0	0
Total Assets	31,862		31,862		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	7,705	3,979	11,668	7,249
Golf and Related Operations [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	7,714	3,981	11,685	7,279
Income (loss) before income taxes	1,626	(186)	1,826	(917)
Gain on debt extinguishment	877	0	1,462	0
Total Assets	59,768		59,768		$ 57,863
Golf and Related Operations [Member] | Intersegment Eliminations [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	$ 9	$ 2	$ 17	$ 30