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CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical) - USD ($) $ in Thousands | Mar. 27, 2020 | Sep. 27, 2019 | Mar. 29, 2019
--- | --- | --- | ---
Property, plant and equipment, accumulated depreciation | $ 149,083 | $ 143,028 | $ 136,834
Class A |  |  |
Common stock, shares issued (shares) | 8,871,007 | 8,834,169 | 8,838,459
Common stock, shares outstanding (shares) | 8,871,007 | 8,834,169 | 8,838,459
Treasury stock, shares (shares) | 36,354 | 29,225 | 29,225
Class B |  |  |
Common stock, shares issued (shares) | 1,211,602 | 1,211,602 | 1,211,602
Common stock, shares outstanding (shares) | 1,211,602 | 1,211,602 | 1,211,602

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