Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 26, 2024	Dec. 28, 2023
Accounts receivables	$ 176	$ 115
Preferred stock, par (in dollars per share)	$ 1	$ 1
Preferred stock, authorized (in shares)	1,000,000	1,000,000
Preferred stock, issued (in shares)	0	0
Cost of common stock in treasury (in shares)	739,977	47,916
Common Stock
Common stock, par (in dollars per share)	$ 1	$ 1
Common stock, authorized (in shares)	50,000,000	50,000,000
Common stock, issued (in shares)	25,237,374	24,691,548
Class B Common Stock
Common stock, par (in dollars per share)	$ 1	$ 1
Common stock, authorized (in shares)	33,000,000	33,000,000
Common stock, issued (in shares)	6,984,584	7,078,410
Common stock, outstanding (in shares)	6,984,584	7,078,410