Stockholders' Equity (Comprehensive Income, Net Of Taxes) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Oct. 02, 2011	Oct. 03, 2010
Stockholders' Equity [Line Items]
Net earnings	$ 57,651	$ 80,600	$ 70,210
Cash flow hedges, Net loss reclassified to earnings	1,304	117	4,719
Cash flow hedges, Total	249	(1,949)	3,882
Cash flow hedges, Tax effect	(97)	750	(1,481)
Cash flow hedges, Net of tax	152	(1,199)	2,401
Unrecognized periodic benefit costs, Actuarial losses arising during the period	(78,619)	(36,862)	(8,426)
Unrecognized periodic benefit costs, Actuarial losses and prior service cost reclassified to earnings	13,532	10,544	12,051
Unrecognized periodic benefit costs, Total	(65,087)	(26,318)	3,625
Unrecognized periodic benefit costs, Tax effect	24,862	10,364	(1,371)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax, Portion Attributable to Parent	(40,225)	(15,954)	2,254
Total comprehensive income	17,578	63,447	74,865
Interest Rate Swaps [Member] | Derivatives Designated As Hedging Instrument [Member]
Stockholders' Equity [Line Items]
Cash flow hedges, Net change in fair value of derivatives	$ (1,055)	$ (2,066)	$ (837)