Other Comprehensive Income (Loss) (Schedule of Amounts Reclassified out of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenue	$ 232,209	$ 194,668	$ 668,436	$ 580,153
Interest expense, net	(6,687)	(6,249)	(20,873)	(19,761)
Provision for income taxes	(2,605)	(1,066)	(6,217)	20,877
Cost of sales	(147,106)	(118,384)	(417,678)	(351,116)
Selling and marketing	(33,321)	(32,171)	(98,805)	(94,796)
General and administrative	(20,621)	(19,081)	(63,804)	(58,635)
Other income (expense), net	(124)	30	195	81
Income before income taxes	16,190	10,045	44,463	29,691
Net income	13,585	8,979	38,246	50,568
Reclassification Out Of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income	560	424	1,850	(552)
Reclassification Out Of Accumulated Other Comprehensive Income \| Unrealized Derivative Instrument
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Provision for income taxes	(182)	(179)	(595)	96
Net income	655	516	2,136	(274)
Reclassification Out Of Accumulated Other Comprehensive Income \| Defined Benefit Pension Plan
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Provision for income taxes	39	39	122	120
Cost of sales	0	(71)	0	(217)
Selling and marketing	0	(38)	0	(113)
General and administrative	0	(22)	0	(68)
Other income (expense), net	(134)	0	(408)	0
Income before income taxes	(134)	(131)	(408)	(398)
Net income	(95)	(92)	(286)	(278)
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	142	273	743	(1,031)
Reclassification Out Of Accumulated Other Comprehensive Income \| Interest rate swap \| Unrealized Derivative Instrument
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense, net	$ 695	$ 422	$ 1,988	$ 661

The aggregate cost of goods produced and sold and services rendered during the reporting period.

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