Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2022	Dec. 25, 2021
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	90,000,000	90,000,000
Common stock, shares issued (in shares)	49,276,000	48,756,000
Common stock, shares outstanding (in shares)	49,276,000	48,756,000
Treasury stock, shares (in shares)	1,767,000	207,000