Note 2 - Discontinued Operation and Assets and Liabilities Related to Discontinued Operation (Details Textual) - Ontario Knife Company [Member] - Discontinued Operations, Held-for-Sale [Member] - USD ($)	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Disposal Group, Including Discontinued Operation, Operating Income (Loss)	$ (17,000)	$ (25,000)
Disposal Group, Including Discontinued Operation, Change in Cost Estimate	$ 0	$ 8,000