Condensed Consolidated Statements of Operations (unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Dec. 29, 2012	Dec. 31, 2011
Net sales	$ 183,202	$ 190,767
Cost of sales	105,567	110,408
Gross profit	77,635	80,359
Operating expenses:
Research and development	19,301	18,779
Selling, general and administrative	36,982	34,631
AmortizationNetofCostofSales	854
Amortization of Intangible Assets	1,181	1,636
Total operating expenses	57,137	55,046
Income from operations	20,498	25,313
Other income (expense):
Interest and dividend income	50	202
Interest expense	(12)	(2)
Other—net	(1,475)	318
Total other income (expense), net	(1,437)	518
Income before income taxes	19,061	25,831
Provision for income taxes	4,908	8,780
Net income	$ 14,153	$ 17,051
Net income per share:
Basic	$ 0.60	$ 0.73
Diluted	$ 0.58	$ 0.71
Shares used in computation:
Basic	23,770	23,462
Diluted	24,222	23,961