Other Comprehensive Income (Loss) (Schedule Of Changes In Each Component Of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the year	$ 405,260	$ 258,142	$ 258,127
Other comprehensive net gain (loss) reclassifications	9,026	(5,418)	(9,013)
Net (gain) loss reclassified to earnings	794	622	(2,388)
Other comprehensive income (loss)	9,820	(4,796)	(11,401)
Balance at the end of the year	428,777	405,260	258,142
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the year	673	1,005	12,220
Other comprehensive net gain (loss) reclassifications	3,273	(332)	(11,215)
Net (gain) loss reclassified to earnings	0	0	0
Other comprehensive income (loss)	3,273	(332)	(11,215)
Balance at the end of the year	3,946	673	1,005
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the year	(255)	386	898
Other comprehensive net gain (loss) reclassifications	2,110	(855)	2,226
Net (gain) loss reclassified to earnings	98	214	(2,738)
Other comprehensive income (loss)	2,208	(641)	(512)
Balance at the end of the year	1,953	(255)	386
Accumulated Defined Benefit Plans Adjustment [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the year	(10,791)	(6,968)	(7,294)
Other comprehensive net gain (loss) reclassifications	3,643	(4,231)	(24)
Net (gain) loss reclassified to earnings	696	408	350
Other comprehensive income (loss)	4,339	(3,823)	326
Balance at the end of the year	(6,452)	(10,791)	(6,968)
AOCI Attributable to Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the year	(10,373)	(5,577)	5,824
Balance at the end of the year	$ (553)	$ (10,373)	$ (5,577)