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Derivative Instruments and Hedging Activities - Notional and Fair Value (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 03, 2021	Apr. 04, 2020	Apr. 03, 2021	Apr. 04, 2020	Oct. 03, 2020
Derivatives, Fair Value [Line Items]
Loss on derivatives	$ 500	$ 600	$ 1,500	$ 100
Derivatives not designated as hedging instruments \| Purchase \| Euro
Derivatives, Fair Value [Line Items]
Derivative asset, notional amount	210,707		210,707		$ 169,206
Derivative asset, Fair Value	(2,140)		(2,140)		(1,802)
Derivatives not designated as hedging instruments \| Sell \| Euro
Derivatives, Fair Value [Line Items]
Derivative liability, notional amount	(86,623)		(86,623)		(166,813)
Derivative liability, Fair Value	$ 905		$ 905		$ (197)