Other Comprehensive Income (Loss) (Schedule of Changes in each Component of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Mar. 30, 2019	Mar. 31, 2018
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the year	$ 473,335	$ 461,580	$ 477,932	$ 428,777
Other comprehensive net gain (loss) reclassifications	(455)	4,590	(4,804)	8,402
Net (gain) loss reclassified to earnings	(472)	782	(1,290)	976
Other comprehensive income (loss)	(927)	5,372	(6,094)	9,378
Balance at the end of the year	485,054	472,230	485,054	472,230
Other comprehensive income (loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the year	(3,691)	3,453	1,476	(553)
Balance at the end of the year	(4,618)	8,825	(4,618)	8,825
Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the year	269	6,445	1,772	3,946
Other comprehensive net gain (loss) reclassifications	(1,168)	5,172	(2,671)	7,671
Net (gain) loss reclassified to earnings	0	0	0	0
Other comprehensive income (loss)	(1,168)	5,172	(2,671)	7,671
Balance at the end of the year	(899)	11,617	(899)	11,617
Unrealized Derivative Instrument
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the year	3,990	3,086	6,320	1,953
Other comprehensive net gain (loss) reclassifications	(392)	240	(1,808)	1,270
Net (gain) loss reclassified to earnings	(567)	687	(1,481)	790
Other comprehensive income (loss)	(959)	927	(3,289)	2,060
Balance at the end of the year	3,031	4,013	3,031	4,013
Defined Benefit Pension Plan
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the year	(7,950)	(6,078)	(6,616)	(6,452)
Other comprehensive net gain (loss) reclassifications	1,105	(822)	(325)	(539)
Net (gain) loss reclassified to earnings	95	95	191	186
Other comprehensive income (loss)	1,200	(727)	(134)	(353)
Balance at the end of the year	$ (6,750)	$ (6,805)	$ (6,750)	$ (6,805)