Other Comprehensive Income (Loss) (Schedule Of Other Comprehensive Income (Loss)) Allocated To Each Component Of Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Apr. 01, 2017	Mar. 31, 2018	Apr. 01, 2017
Foreign Currency Translation
Other Comprehensive Income (Loss), before Tax [Abstract]
Other comprehensive income (loss), before reclassifications, pretax	$ 5,172	$ 3,197	$ 7,671	$ (6,605)
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other comprehensive income (loss), before reclassifications, net of tax	5,172	3,197	7,671	(6,605)
Unrealized Derivative Instrument
Other Comprehensive Income (Loss), before Tax [Abstract]
Other comprehensive income (loss), before reclassifications, pretax	324	(1,593)	1,713	4,916
Net (gain) loss reclassified to earnings	926	98	1,065	(321)
Other Comprehensive Income (Loss), Tax [Abstract]
Other comprehensive income (loss) before reclassifications, tax	(84)	576	(443)	(1,775)
Net (gain) loss reclassified to earnings, tax	(239)	(36)	(275)	115
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other comprehensive income (loss), before reclassifications, net of tax	240	(1,017)	1,270	3,141
Net (gain) loss reclassified to earnings, net of tax	687	62	790	(206)
Defined Benefit Pension Plan
Other Comprehensive Income (Loss), before Tax [Abstract]
Other comprehensive income (loss), before reclassifications, pretax	(918)	284	(388)	467
Net (gain) loss reclassified to earnings	137	238	267	482
Other Comprehensive Income (Loss), Tax [Abstract]
Other comprehensive income (loss) before reclassifications, tax	277	(86)	117	(141)
Net (gain) loss reclassified to earnings, tax	(42)	(71)	(81)	(145)
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other comprehensive income (loss), before reclassifications, net of tax	(641)	198	(271)	326
Net (gain) loss reclassified to earnings, net of tax	95	167	186	337
Currency exchange rate gain (loss)
Other Comprehensive Income (Loss), before Tax [Abstract]
Other comprehensive income (loss), before reclassifications, pretax	(181)	(190)	(268)	507
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other comprehensive income (loss), before reclassifications, net of tax	(181)	(190)	(268)	507
Other comprehensive income (loss)
Other Comprehensive Income (Loss), before Tax [Abstract]
Other comprehensive income (loss), before tax	5,460	2,034	10,060	(554)
Other Comprehensive Income (Loss), Tax [Abstract]
Other comprehensive income (loss), tax	(88)	383	(682)	(1,946)
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other comprehensive income (loss), net of tax	$ 5,372	$ 2,417	$ 9,378	$ (2,500)