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Impairment of Long-Lived Assets and Goodwill (Schedule of Goodwill) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 30, 2021	Mar. 31, 2020	Mar. 30, 2021	Mar. 31, 2020	Mar. 31, 2020
Goodwill and Intangible Asset Impairment [Abstract]
Balance as of September 24, 2019			$ 5,150
Impairment of Goodwill		$ (10,000)		$ (10,000)	$ (10,000)
Balance as of March 31, 2020	$ 5,150	$ 5,150	$ 5,150	$ 5,150	$ 5,150

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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