Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended
Jan. 04, 2020	Dec. 29, 2018
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	$ (67,811)
Other comprehensive income, gross		$ (1,130)
Amounts reclassified from other comprehensive loss and included in earnings	430	748
Total amount recognized in other comprehensive loss	430	(382)
Income tax (expense) benefit	(103)	92
Ending Balance	(67,856)
Defined Benefit Pension Plan
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(56,154)	(38,427)
Other comprehensive income, gross		0
Amounts reclassified from other comprehensive loss and included in earnings	430	689
Total amount recognized in other comprehensive loss	430	689
Income tax (expense) benefit	(103)	(165)
Ending Balance	(55,827)	(37,903)
Cash Flow Hedges (Effective Portion)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	0	0
Other comprehensive income, gross		(1,130)
Amounts reclassified from other comprehensive loss and included in earnings	0	59
Total amount recognized in other comprehensive loss	0	(1,071)
Income tax (expense) benefit	0	257
Ending Balance	0	(814)
AOCI Attributable to Parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(56,154)	(38,427)
Ending Balance	$ (55,827)	$ (38,717)

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount before tax and reclassification adjustments of other comprehensive income (loss) attributable to parent.

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Amount before tax of other comprehensive income (loss) attributable to parent entity.

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