Condensed Consolidated Statement of Operations and Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 01, 2012	Apr. 03, 2011	Apr. 01, 2012	Apr. 03, 2011
Net Sales	$ 249,306	$ 207,490	$ 490,226	$ 391,841
Cost of sales	117,438	114,854	232,622	204,176
Gross profit	131,868	92,636	257,604	187,665
Operating expenses:
Selling, general and administrative	51,971	43,576	106,687	89,906
Research and development	42,188	28,182	81,789	52,153
Amortization of intangible assets	26,472	15,946	51,334	28,017
Restructuring and severance charges	119	13,286	7,344	19,620
Total operating expenses	120,750	100,990	247,154	189,696
Operating income (loss)	11,118	(8,354)	10,450	(2,031)
Other expense, net:
Interest expense, net	(8,950)	(4,742)	(20,789)	(7,896)
Other expense, net	(2,279)	(1,002)	(34,683)	(18,952)
Total other expense, net	(11,229)	(5,744)	(55,472)	(26,848)
Loss before income taxes	(111)	(14,098)	(45,022)	(28,879)
Provision (benefit) for income taxes	4,681	5,031	4,372	(8,454)
NET LOSS	(4,792)	(19,129)	(49,394)	(20,425)
Basic and diluted loss per share	$ (0.06)	$ (0.23)	$ (0.58)	$ (0.25)
Basic and diluted common and common equivalent shares outstanding	85,645	83,853	85,435	82,432
Other comprehensive income (loss), net of tax
Translation adjustment	(176)	513	(115)	485
COMPREHENSIVE LOSS	$ (4,968)	$ (18,616)	$ (49,509)	$ (19,940)