CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical) - USD ($) $ in Thousands	Jan. 01, 2021	Oct. 02, 2020	Dec. 27, 2019
Accumulated depreciation	$ 160,822	$ 156,541	$ 146,453
Treasury stock (in shares)	41,977	36,316	36,354
Class A
Common stock, issued (in shares)	8,900,608	8,873,235	8,858,611
Common stock, shares outstanding (in shares)	8,900,608	8,873,235	8,858,611
Class B
Common stock, issued (in shares)	1,211,564	1,211,564	1,211,602
Common stock, shares outstanding (in shares)	1,211,564	1,211,564	1,211,602

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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