Other Comprehensive Income (Loss) (Schedule of Changes in each Component of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the year	$ 484,059	$ 477,932
Other comprehensive net gain (loss) reclassifications	3,635	(4,349)
Net (gain) loss reclassified to earnings	(38)	(818)
Other comprehensive income (loss)	3,597	(5,167)
Balance at the end of the year	488,748	473,335
Other comprehensive income (loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the year	(18,473)	1,476
Other comprehensive income (loss)	3,597	(5,167)
Balance at the end of the year	(14,876)	(3,691)
Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the year	(8,208)	1,772
Other comprehensive net gain (loss) reclassifications	3,547	(1,503)
Net (gain) loss reclassified to earnings	0	0
Other comprehensive income (loss)	3,547	(1,503)
Balance at the end of the year	(4,661)	269
Unrealized Derivative Instrument
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the year	1,274	6,320
Other comprehensive net gain (loss) reclassifications	(114)	(1,416)
Net (gain) loss reclassified to earnings	(250)	(914)
Other comprehensive income (loss)	(364)	(2,330)
Balance at the end of the year	910	3,990
Defined Benefit Pension Plan
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the year	(11,539)	(6,616)
Other comprehensive net gain (loss) reclassifications	202	(1,430)
Net (gain) loss reclassified to earnings	212	96
Other comprehensive income (loss)	414	(1,334)
Balance at the end of the year	$ (11,125)	$ (7,950)