Goodwill and Acquisition-Related Intangibles (Tables)

9 Months Ended

Dec. 31, 2011

Goodwill and Acquisition-Related Intangibles [Abstract]

Gross and net amounts of goodwill and of acquisition-related intangibles

		September 30,			September 30,			September 30,
	December 31,			April 2,			Weighted Average
(In thousands)	2011			2011			Amortization Life
Goodwill	$	149,701		$	133,580
In-process research and development	$	4,000		$	6,000
Core technology, gross		76,440			58,439			5.7 years
Less accumulated amortization		(44,401	)		(39,789	)
Core technology, net		32,039			18,650
Other intangibles, gross		46,206			45,201			2.7 years
Less accumulated amortization		(43,931	)		(42,955	)
Other intangibles, net		2,275			2,246
Total acquisition-related intangibles, gross		126,646			109,640
Less accumulated amortization		(88,332	)		(82,744	)
Total acquisition-related intangibles, net	$	38,314		$	26,896

Schedule of expected annual amortization expense for acquisition-related intangibles

		September 30,
Fiscal Year	(In thousands)
2012 (remaining three months)	$	1,982
2013		8,536
2014		7,918
2015		7,289
2016		6,742
Thereafter		5,847
Total	$	38,314