Note P - Business Acquisitions - Schedule of Pro Forma Results of Operations (Details) - Knox Safety, Inc [Member] $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) $ / shares shares
Net sales	$ 340,140
Net earnings	$ 19,299
Net earnings per share (basic and diluted) (in dollars per share) | $ / shares	$ 2.92
Weighted average shares outstanding (basic and diluted) (in shares) | shares	7,081