Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
Dec. 29, 2018	Dec. 30, 2017
Statement of Comprehensive Income [Abstract]
Net loss	$ (1,220)	$ (7,839)
Other comprehensive (loss) income, net of tax
Net change in defined benefit pension plan	524	563
Net unrealized loss on cash flow hedges	(814)	0
Total other comprehensive (loss) income	(290)	563
Comprehensive loss	$ (1,510)	$ (7,276)

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount, after tax and reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan.

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Amount after tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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