Note H - Earnings Per Share - Earnings Per Share (Details) - shares shares in Thousands	3 Months Ended	4 Months Ended	6 Months Ended
	Jun. 30, 2023	Jul. 09, 2022	Jun. 30, 2023	Jul. 09, 2022
Weighted average common shares outstanding (in shares)	13,733	13,588	13,691	13,554
Dilutive effect of stock options and restricted stock units (in shares)	109	55	102	62
Weighted average common shares outstanding, assuming dilution (in shares)	13,842	13,643	13,793	13,616