Business Acquisitions (Tables)

12 Months Ended

Mar. 31, 2011

Notes to Financial Statements [Abstract]

Allocation of purchase price of acquired net assets

The table below represents the final allocation of the purchase price to the acquired net assets based on their estimated fair values as of April 8, 2010, as well as the associated estimated useful lives of the acquired intangible assets at that date:

	April 8, 2010
	(in thousands)
Assets acquired
Cash and cash equivalents	$	182,735
Short-term investments		12,069
Accounts receivable, net		44,820
Inventories		39,962
Deferred tax assets		21,785
Other current assets		3,768
Long-term investments		54,342
Property, plant and equipment, net		6,623
Non-marketable equity investments		15,772
Other assets		3,634
Goodwill		24,961
Purchased intangible assets		50,930
Assets held for sale		23,761
Total assets acquired	$	485,162
Liabilities assumed
Accounts payable		(28,906	)
Accrued liabilities		(40,914	)
Deferred income on shipments to distributors		(2,322	)
Long-term income tax payable		(36,587	)
Deferred tax liability		(17,599	)
Other liabilities		(4,990	)
Total liabilities assumed		(131,318	)
Purchase price allocated	$	353,844

Schedule of finite-lived intangible assets acquired as part of business combination

Purchased Intangible Assets	Useful Life		April 8, 2010
	(in years)		(in thousands)
Core/developed technology		5-10	$	32,900
In-process research and development		N/A		900
Trademarks and trade names		5		1,730
Customer-related		10		13,100
Backlog		1		2,300
			$	50,930

Pro-forma consolidated results of operations for acquisition and discontinued operations

The following unaudited pro-forma consolidated results of operations for fiscal years 2011, 2010 and 2009, assume the SST acquisition occurred as of April 1 of each year and have been restated for the operations of SST that have been discontinued.  The pro forma results of operations are presented for informational purposes only and are not indicative of the results of operations that would have been achieved if the acquisition had taken place on April 1, 2010, April 1, 2009 and April 1, 2008 or of results that may occur in the future (amounts in thousands):

	Unaudited
	Year Ended March 31,
	2011		2010		2009
Total revenue	$	1,494,727	$	1,190,178	$	1,145,099
Net income		429,794		207,421		233,925
Basic earnings per share	$	2.30	$	1.13	$	1.28
Diluted earnings per share	$	2.21	$	1.11	$	1.25