Note 13 - Business Segment Information - Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Revenue	$ 16,068	$ 18,858
Operating revenues	16,068	18,858
Total Assets	87,631		$ 86,186
Cost of operations	(13,691)	(15,795)
Selling, general and administrative	(2,558)	(2,596)
Depreciation and amortization	(970)	(980)
Interest expense, net	(510)	(508)
Income (loss) before taxes	(1,661)	(1,014)
Other	0	7
Waste Management Services [Member]
Revenue	9,677	12,470
Operating revenues	9,677	12,470
Cost of operations	(7,582)	(9,897)
Operating Segments [Member] | Waste Management Services [Member]
Revenue	9,677	12,470
Operating revenues	9,677	12,470
Total Assets	36,855		35,100
Cost of operations	(7,582)	(9,897)
Selling, general and administrative	(1,174)	(1,329)
Depreciation and amortization	(48)	(46)
Interest expense, net	(7)	16
Income (loss) before taxes	866	1,221
Other		7
Operating Segments [Member] | Golf and Related Operations [Member]
Revenue	6,391	6,388
Operating revenues	6,391	6,388
Total Assets	64,793		62,500
Cost of operations	(6,109)	(5,898)
Selling, general and administrative	(505)	(361)
Depreciation and amortization	(879)	(871)
Interest expense, net	(10)	(9)
Income (loss) before taxes	(1,112)	(751)
Other		0
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Revenue	0	0
Operating revenues	0	0
Total Assets	61,776		64,247
Cost of operations	0	0
Selling, general and administrative	(879)	(906)
Depreciation and amortization	(43)	(63)
Interest expense, net	(493)	(515)
Income (loss) before taxes	(1,415)	(1,484)
Other		$ 0
Operating Segments and Corporate Non Segment [Member]
Total Assets	163,424		161,847
Intersegment Eliminations [Member]
Total Assets	$ (75,793)		$ (75,661)