Note 13 - Business Segment Information - Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Revenue	$ 24,296	$ 25,746	$ 62,852	$ 62,067
Cost of operations	(17,492)	(19,642)	(48,281)	(49,419)
Selling, general and administrative	(2,718)	(2,826)	(8,007)	(7,835)
Depreciation and amortization	(921)	(932)	(2,776)	(2,867)
Interest expense, net	(509)	(512)	(1,517)	(1,532)
Income (loss) before taxes	2,656	1,834	2,256	414
Loss on disposal	0	0	(15)	0
Golf and Related Operations [Member]
Revenue	13,198	12,828	30,132	29,729
Operating Segments [Member]
Revenue	24,296	25,746	62,852	62,067
Operating Segments [Member] | Waste Management Services [Member]
Revenue	11,098	12,918	32,720	32,338
Cost of operations	(8,446)	(10,259)	(24,997)	(25,330)
Selling, general and administrative	(1,461)	(1,294)	(4,178)	(3,644)
Depreciation and amortization	(49)	(49)	(146)	(145)
Interest expense, net	(4)	(6)	(14)	(19)
Income (loss) before taxes	1,138	1,310	3,385	3,200
Operating Segments [Member] | Golf and Related Operations [Member]
Revenue	13,198	12,828	30,132	29,729
Cost of operations	(9,046)	(9,383)	(23,284)	(24,089)
Selling, general and administrative	(379)	(652)	(1,174)	(1,624)
Depreciation and amortization	(828)	(840)	(2,504)	(2,592)
Interest expense, net	(31)	(23)	(79)	(51)
Income (loss) before taxes	2,914	1,930	3,076	1,373
Loss on disposal			(15)
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Revenue	0	0	0	0
Cost of operations	0	0	0	0
Selling, general and administrative	(878)	(880)	(2,655)	(2,567)
Depreciation and amortization	(44)	(43)	(126)	(130)
Interest expense, net	(474)	(483)	(1,424)	(1,462)
Income (loss) before taxes	$ (1,396)	$ (1,406)	(4,205)	$ (4,159)
Loss on disposal			$ 0