Note H - Earnings Per Share - Earnings Per Share (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Oct. 01, 2022	Sep. 30, 2023	Oct. 01, 2022
Weighted average common shares outstanding (in shares)	13,737	13,590	13,706	13,565
Dilutive effect of stock options and restricted stock units (in shares)	150	62	140	82
Weighted average common shares outstanding, assuming dilution (in shares)	13,887	13,652	13,846	13,647