Other Comprehensive Income (Loss) (Schedule Of Changes In Each Component Of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Apr. 01, 2017	Mar. 31, 2018	Apr. 01, 2017
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, at period start			$ 428,777
Other comprehensive net gain (loss) reclassifications	$ 4,590	$ 2,188	8,402	$ (2,631)
Net (gain) loss reclassified to earnings	782	229	976	131
Other comprehensive income (loss)	5,372	2,417	9,378	(2,500)
Balance, at period end	472,230		472,230
Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, at period start	6,445	(9,129)	3,946	673
Other comprehensive net gain (loss) reclassifications	5,172	3,197	7,671	(6,605)
Net (gain) loss reclassified to earnings	0	0	0	0
Other comprehensive income (loss)	5,172	3,197	7,671	(6,605)
Balance, at period end	11,617	(5,932)	11,617	(5,932)
Unrealized Derivative Instrument
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, at period start	3,086	3,635	1,953	(255)
Other comprehensive net gain (loss) reclassifications	240	(1,017)	1,270	3,141
Net (gain) loss reclassified to earnings	687	62	790	(206)
Other comprehensive income (loss)	927	(955)	2,060	2,935
Balance, at period end	4,013	2,680	4,013	2,680
Defined Benefit Pension Plan
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, at period start	(6,078)	(9,796)	(6,452)	(10,791)
Other comprehensive net gain (loss) reclassifications	(822)	8	(539)	833
Net (gain) loss reclassified to earnings	95	167	186	337
Other comprehensive income (loss)	(727)	175	(353)	1,170
Balance, at period end	(6,805)	(9,621)	(6,805)	(9,621)
Other comprehensive income (loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, at period start	3,453	(15,290)	(553)	(10,373)
Balance, at period end	$ 8,825	$ (12,873)	$ 8,825	$ (12,873)