CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 29, 2024	Sep. 29, 2023	Mar. 31, 2023
Accumulated depreciation	$ 184,519	$ 177,426	$ 171,961
Treasury stock (in shares)	35,353	25,342	20,149
Class A
Common stock, issued (in shares)	9,093,582	9,043,189	9,047,113
Common stock, shares outstanding (in shares)	9,093,582	9,043,189	9,047,113
Class B
Common stock, issued (in shares)	1,207,760	1,207,760	1,207,798
Common stock, shares outstanding (in shares)	1,207,760	1,207,760	1,207,798