Condensed Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Dec. 27, 2014	Dec. 28, 2013
Net sales	$ 1,671,162us-gaap_SalesRevenueNet	$ 1,447,498us-gaap_SalesRevenueNet
Cost of sales	1,544,816us-gaap_CostOfGoodsAndServicesSold	1,336,713us-gaap_CostOfGoodsAndServicesSold
Gross profit	126,346us-gaap_GrossProfit	110,785us-gaap_GrossProfit
Operating expenses:
Selling, general and administrative	59,418	59,182
Research and development	8,069us-gaap_ResearchAndDevelopmentExpense	7,905us-gaap_ResearchAndDevelopmentExpense
Restructuring costs	3,000us-gaap_RestructuringCharges	3,704us-gaap_RestructuringCharges
Amortization of intangible assets	425us-gaap_AmortizationOfIntangibleAssets	474us-gaap_AmortizationOfIntangibleAssets
Asset impairments	1,954us-gaap_OtherAssetImpairmentCharges	0us-gaap_OtherAssetImpairmentCharges
Total operating expenses	72,866us-gaap_OperatingExpenses	71,265us-gaap_OperatingExpenses
Operating income	53,480us-gaap_OperatingIncomeLoss	39,520us-gaap_OperatingIncomeLoss
Interest income	289us-gaap_InterestAndOtherIncome	806us-gaap_InterestAndOtherIncome
Interest expense	(6,437)us-gaap_InterestExpense	(7,473)us-gaap_InterestExpense
Other income (expense), net	(1,528)us-gaap_OtherNonoperatingIncomeExpense	878us-gaap_OtherNonoperatingIncomeExpense
Interest and other, net	(7,676)us-gaap_NonoperatingIncomeExpense	(5,789)us-gaap_NonoperatingIncomeExpense
Income before income taxes	45,804	33,731
Provision for income taxes	23,148us-gaap_IncomeTaxExpenseBenefit	10,630us-gaap_IncomeTaxExpenseBenefit
Net income	$ 22,656us-gaap_NetIncomeLoss	$ 23,101us-gaap_NetIncomeLoss
Net income per share:
Basic	$ 0.27us-gaap_EarningsPerShareBasic	$ 0.28us-gaap_EarningsPerShareBasic
Diluted	$ 0.26us-gaap_EarningsPerShareDiluted	$ 0.26us-gaap_EarningsPerShareDiluted
Weighted average shares used in computing per share amounts:
Basic	82,548	83,766
Diluted	86,682	87,259

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