Other Comprehensive Income (Loss) (Schedule of Changes in each Component of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the year	$ 481,678	$ 485,054	$ 484,059	$ 477,932
Other comprehensive net gain (loss) reclassifications	3,263	(231)	3,266	(5,035)
Net (gain) loss reclassified to earnings	(59)	(560)	(314)	(1,850)
Other comprehensive income (loss)	3,204	(791)	2,952	(6,885)
Balance at the end of the year	488,856	494,539	488,856	494,539
Other comprehensive income (loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the year	(18,725)	(4,618)	(18,473)	1,476
Other comprehensive income (loss)	3,204	(791)	2,952	(6,885)
Balance at the end of the year	(15,521)	(5,409)	(15,521)	(5,409)
Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the year	(7,260)	(899)	(8,208)	1,772
Other comprehensive net gain (loss) reclassifications	3,974	506	4,922	(2,165)
Net (gain) loss reclassified to earnings	0	0	0	0
Other comprehensive income (loss)	3,974	506	4,922	(2,165)
Balance at the end of the year	(3,286)	(393)	(3,286)	(393)
Unrealized Derivative Instrument
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the year	1,420	3,031	1,274	6,320
Other comprehensive net gain (loss) reclassifications	(725)	(1,074)	97	(2,882)
Net (gain) loss reclassified to earnings	(270)	(655)	(946)	(2,136)
Other comprehensive income (loss)	(995)	(1,729)	(849)	(5,018)
Balance at the end of the year	425	1,302	425	1,302
Defined Benefit Pension Plan
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the year	(12,885)	(6,750)	(11,539)	(6,616)
Other comprehensive net gain (loss) reclassifications	14	337	(1,753)	12
Net (gain) loss reclassified to earnings	211	95	632	286
Other comprehensive income (loss)	225	432	(1,121)	298
Balance at the end of the year	$ (12,660)	$ (6,318)	$ (12,660)	$ (6,318)