Condensed Consolidated Statements Of Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 30, 2013	Mar. 31, 2012	Mar. 30, 2013	Mar. 31, 2012
Income Statement [Abstract]
Net sales	$ 557,824	$ 573,470	$ 1,088,356	$ 1,103,124
Cost of sales	505,803	518,846	985,173	996,848
Gross profit	52,021	54,624	103,183	106,276
Selling and administrative expenses	28,833	28,856	58,511	56,746
Operating income	23,188	25,768	44,672	49,530
Other income (expense):
Interest expense	(3,640)	(4,020)	(7,360)	(8,080)
Interest income	383	415	780	898
Miscellaneous	0	228	(475)	(317)
Income before income taxes	19,931	22,391	37,617	42,031
Income tax expense	2,000	2,400	3,000	4,203
Net income	17,975	19,958	34,591	37,828
Earnings per share:
Basic	$ 0.52	$ 0.57	$ 1.01	$ 1.09
Diluted	$ 0.52	$ 0.56	$ 1.00	$ 1.07
Weighted average shares outstanding:
Basic	34,286	34,874	34,253	34,737
Diluted	34,694	35,658	34,673	35,431
Comprehensive income:
Net income	17,975	19,958	34,591	37,828
Derivative instrument fair market value adjustment - net of income tax	1,234	2,065	723	3,659
Foreign currency translation adjustments	(2,035)	342	590	1,177
Comprehensive income	$ 17,174	$ 22,365	$ 35,904	$ 42,664