Acquired Intangible Assets

12 Months Ended

Mar. 31, 2012

Acquired Intangible Assets

11. Acquired Intangible Assets

Acquired intangible assets as of March 31, 2012 and April 2, 2011 consisted of the following:

(In thousands, except years)	Weighted Average Useful Life (In years)	2012			2011
Developed technology	7	$	8,100		$	8,100
Customer relationships	6		2,700			2,700
Customer backlog	1		700			700
Trade name and trademarks	3		400			400
Fair value of below-market lease (non-current portion)	3.8		310			310
Change of control agreements	1		100			100
Patents	13.1		3,427			3,427
In-process research and development1	Indefinite		3,204			3,204
			18,941			18,941
Less accumulated amortization			(10,609	)		(8,906	)
Total non-current acquired intangible assets			8,332			10,035
Fair value of below-market lease (current portion)			110			110
Less accumulated amortization			(110	)		(91	)
Total acquired intangible assets		$	8,332		$	10,054

1. See Note 6 “Business Acquisition” for additional discussion.

Amortization expense for acquired intangible assets has been recorded on the Consolidated Statements of Operations as follows:

(In thousands)	2012		2011		2010
Cost of sales	$	1,157	$	1,157	$	1,155
Selling, service and administration		315		576		798
Research, development and engineering		250		231		196
	$	1,722	$	1,964	$	2,149

The estimated amortization expense for acquired intangible assets in future years is as follows (in thousands):

Year	Amortization
2013	$	1,936
2014		1,807
2015		967
2016		610
2017		606
Future years		1,796
	$	7,722

The above table excludes estimated amortization expense on certain in-process research and development assets as the project completion dates are not known as of March 31, 2012.