CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 27, 2024	Sep. 27, 2024	Dec. 29, 2023
Accumulated depreciation	$ 195,989	$ 192,890	$ 180,947
Treasury stock (in shares)	49,001	42,654	30,003
Class A
Common stock, issued (in shares)	9,119,752	9,093,978	9,076,240
Common stock, shares outstanding (in shares)	9,119,752	9,093,978	9,076,240
Class B
Common stock, issued (in shares)	1,207,760	1,207,760	1,207,760
Common stock, shares outstanding (in shares)	1,207,760	1,207,760	1,207,760