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Supplemental Financial Information - Pension Expense (Details) - USD ($) $ in Thousands | 3 Months Ended
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Jan. 01, 2022 | Jan. 02, 2021
Condensed Financial Information [Abstract] |  |
Interest cost | $ 1,092 | $ 1,057
Expected return on plan assets | (2,122) | (1,944)
Amortization of prior loss | 291 | 465
Net periodic benefit income | (739) | (422)
Amortization of prior loss, recognized in other comprehensive income | (291) | (465)
Total recognized in net periodic pension benefit income and other comprehensive income | $ (1,030) | $ (887)

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