Income Taxes (Provisions for Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
Oct. 03, 2020	Sep. 28, 2019	Sep. 29, 2018
Current
Federal	$ 391	$ 2,392	$ 1,613
State	593	1,171	565
Foreign	3,689	11,638	10,331
Deferred	(16,328)	(9,655)	(29,614)
Income tax provision (benefit)	$ (11,655)	$ 5,546	$ (17,105)

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