CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2022	Dec. 25, 2021
Common Class A
Common stock, par value (in dollars per share)	$ 3	$ 3
Common stock, shares authorized (in shares)	80,000,000	80,000,000
Common stock, shares issued (in shares)	14,453,466	14,792,647
Common stock, shares outstanding (in shares)	14,453,466	14,792,647
Common Class B
Common stock, par value (in dollars per share)	$ 3	$ 3
Common stock, shares authorized (in shares)	16,000,000	16,000,000
Common stock, shares issued (in shares)	1,129,158	1,004,975
Common stock, shares outstanding (in shares)	1,129,158	1,004,975