Note M - Common Stock and Earnings Per Share (Details Textual) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	2 Months Ended	12 Months Ended
	Feb. 26, 2021	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Stock Repurchased and Retired During Period, Shares (in shares)		785	2,009	900
Payments for Repurchase of Common Stock		$ 57,029	$ 150,000	$ 105,375
Subsequent Event [Member]
Stock Repurchased and Retired During Period, Shares (in shares)	284
Payments for Repurchase of Common Stock	$ 26,429
Stock Acquired, Average Cost Per Share (in dollars per share)	$ 92.99