Other Comprehensive Income (Loss) (Schedule of Amounts Reclassified out of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenue	$ 196,225	$ 232,209	$ 613,531	$ 668,436
Interest expense, net	(8,846)	(6,687)	(25,975)	(20,873)
Income tax provision (benefit)	1,038	(2,605)	(113)	(6,217)
Other income (expense), net	(446)	(124)	(1,059)	195
Net income (loss)	4,389	13,585	8,624	38,246
Reclassification Out Of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)	59	560	314	1,850
Reclassification Out Of Accumulated Other Comprehensive Income | Unrealized Derivative Instrument
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax provision (benefit)	(73)	(182)	(269)	(595)
Net income (loss)	270	655	946	2,136
Reclassification Out Of Accumulated Other Comprehensive Income | Defined Benefit Pension Plan
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax provision (benefit)	91	39	273	122
Other income (expense), net	(302)	(134)	(905)	(408)
Net income (loss)	(211)	(95)	(632)	(286)
Reclassification Out Of Accumulated Other Comprehensive Income | Currency exchange contracts gain (loss) | Unrealized Derivative Instrument
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenue	151	142	486	743
Reclassification Out Of Accumulated Other Comprehensive Income | Interest rate swap contracts gain (loss) | Unrealized Derivative Instrument
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense, net	$ 192	$ 695	$ 729	$ 1,988