Note H - Earnings Per Share - Earnings Per Share (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Oct. 02, 2021	Oct. 03, 2020	Oct. 02, 2021	Oct. 03, 2020
Weighted average common shares outstanding (in shares)	13,706	14,128	13,821	14,117
Dilutive effect of stock options and restricted stock units (in shares)	102	137	102	105
Weighted average common shares outstanding, assuming dilution (in shares)	13,808	14,265	13,923	14,222