Other Comprehensive Income (Loss) (Schedule of Amounts Reclassified out of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 28, 2020	Mar. 30, 2019	Mar. 28, 2020	Mar. 30, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenue	$ 211,463	$ 233,046	$ 417,306	$ 436,227
Interest expense, net	(8,857)	(7,368)	(17,129)	(14,186)
Income tax provision (benefit)	(2)	(2,916)	(1,151)	(3,612)
Other income (expense), net	(182)	270	(613)	319
Net income (loss)	(1,071)	14,160	4,235	24,661
Reclassification Out Of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)	217	472	255	1,290
Reclassification Out Of Accumulated Other Comprehensive Income | Unrealized Derivative Instrument
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax provision (benefit)	(126)	(158)	(196)	(413)
Net income (loss)	426	567	676	1,481
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)	92	42	182	83
Other income (expense), net	(301)	(137)	(603)	(274)
Net income (loss)	(209)	(95)	(421)	(191)
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	316	16	335	601
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	$ 236	$ 709	$ 537	$ 1,293