Note A - Summary of Significant Accounting Policies - Schedule of Safety Segment's Goodwill (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2020
Balance as of December 31, 2021	$ 15,317,000
Additions	7,088
Less: Impairments	(3,832,000)	$ 0
Balance as of December 31, 2022	18,573,000
AMTEC Corporation [Member]
Balance as of December 31, 2021	3,556,000
Additions
Less: Impairments
Balance as of December 31, 2022	3,556,000
Amron [Member]
Balance as of December 31, 2021	7,929,000
Additions
Less: Impairments
Balance as of December 31, 2022	7,929,000
Woodlawn Manufacturing, Ltd [Member]
Balance as of December 31, 2021	0
Additions	7,088
Less: Impairments
Balance as of December 31, 2022	7,088,000
OneEvent Technologies, Inc. [Member]
Balance as of December 31, 2021	3,832,000
Additions
Less: Impairments	(3,832,000)
Balance as of December 31, 2022	$ 0