Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Mar. 31, 2012	Apr. 02, 2011
Cash flows from operating activities
Net income	$ 37,828	$ 48,893
Adjustments to reconcile net income to cash flows from operating activities:
Depreciation	24,375	22,545
Amortization of intangibles	346
Gain on sale of property, plant and equipment	(114)	(7)
Deferred income taxes	1,598	360
Stock based compensation expense	6,384	5,490
Changes in operating assets and liabilities:
Accounts receivable	(10,583)	32,660
Inventories	(10,046)	(5,819)
Prepaid expenses and other	(4,471)	(7,847)
Accounts payable	49,637	(36,205)
Customer deposits	2,953	2,088
Accrued liabilities and other	(15,951)	(13,801)
Cash flows provided by operating activities	81,956	48,357
Cash flows from investing activities
Payments for property, plant and equipment	(32,900)	(24,959)
Proceeds from sales of property, plant and equipment	502	738
Sale of long-term investments	2,000
Payments for business acquisition, net of cash acquired	(35,246)
Cash flows used in investing activities	(65,644)	(24,221)
Cash flows from financing activities
Payments on debt and capital lease obligations	(8,630)	(8,892)
Purchases of common stock		(83,421)
Proceeds from exercise of stock options	5,648	2,315
Income tax benefit of stock option exercises	1,718	535
Cash flows used in financing activities	(1,264)	(89,463)
Effect of exchange rate changes on cash and cash equivalents	599	464
Net increase (decrease) in cash and cash equivalents	15,647	(64,863)
Cash and cash equivalents:
Beginning of period	242,107	188,244
End of period	$ 257,754	$ 123,381