Note 2 - Discontinued Operation and Assets and Liabilities Related to Discontinued Operation (Details Textual) - USD ($)	3 Months Ended			9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ (43,000)		$ (386,000)	$ (72,000)	$ (7,326,000)
Ontario Knife Company [Member]
Impairment of Long-Lived Assets to be Disposed of		$ 0		0
Ontario Knife Company [Member] | Discontinued Operations, Held-for-Sale [Member]
Disposal Group, Including Discontinued Operation, Operating Income (Loss)	(33,000)		(403,000)	(90,000)	(1,893,000)
Disposal Group, Including Discontinued Operation, Change in Cost Estimate	(10,000)		(79,000)	18,000	(2,306,000)
Gain (Loss) on Disposition of Assets	(0)		96,000	(0)	(3,127,000)
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ (43,000)		$ (386,000)	$ (72,000)	$ (7,326,000)