Note P - Business Acquisitions - Assets Acquired and Liabilities Assumed (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022	Oct. 26, 2022	Jul. 29, 2022
Accounts receivable			$ 2,136,000
Inventories			2,309,000
Intangible assets			6,058,000
GOODWILL	$ 19,433,000	$ 18,573,000
Less: Deferred tax liability			(2,339,000)
Knox Safety, Inc [Member]
Accounts receivable				$ 1,832,000
Inventories				1,274,000
Intangible assets				290,000
Right-of-use lease assets				1,126,000
Less: Lease liability - noncurrent				(1,004,000)
OneEvent Technologies, Inc. [Member]
Other current assets			130,000	7,000
Property, plant and equipment			6,400,000	868,000
Total assets acquired			24,981,000	5,397,000
Less: Current liabilities assumed			(1,084,000)	(776,000)
Net assets acquired			21,558,000	$ 3,617,000
GOODWILL			$ 7,948,000