Note 2 - Discontinued Operation and Assets and Liabilities Related to Discontinued Operation - Discontinued Operations Financial Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Loss from discontinued operation before income taxes	$ (111,000)	$ (7,240,000)
Income tax	0	0
Loss from discontinued operation, net of tax	(111,000)	(7,240,000)
Ontario Knife Company [Member]
Loss from discontinued operation	111,000
Discontinued Operations, Held-for-Sale [Member] | Ontario Knife Company [Member]
Net Sales	0	3,410,000
Operating costs	(111,000)	(5,462,000)
Loss from discontinued operation	(111,000)	(2,052,000)
Loss from discontinued operation - impairment and divestiture costs	0	(2,026,000)
Loss on sale of assets	0	(3,162,000)
Loss from discontinued operation before income taxes	(111,000)	(7,240,000)
Income tax	0	0
Loss from discontinued operation, net of tax	(111,000)	(7,240,000)
Accounts receivable, net	0	38,000
Prepaid and other assets	8,000	31,000
Inventories, net	0	55,000
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment	1,428,000	1,428,000
Assets related to discontinued operation	1,436,000	1,552,000
Accounts payable	24,000	197,000
Accrued employee compensation and other costs	0	16,000
Liabilities related to discontinued operation	$ 24,000	$ 213,000