Acquired Intangible Assets

12 Months Ended

Mar. 29, 2014

Intangible Assets Disclosure [Abstract]

Acquired Intangible Assets

Acquired Intangible Assets

Acquired intangible assets as of March 29, 2014 and March 30, 2013 consisted of the following:

(In thousands, except years)	Weighted Average Useful Life (In years)	2014			2013
Developed technology	7.7	$	13,315		$	13,073
Customer relationships	5.6	3,154			3,154
Customer backlog	1	1,250			750
Trade name and trademarks	3	463			463
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 development	Indefinite	3,204			3,204
		25,223			24,481
Less accumulated amortization		(18,378		)	(15,393		)
Total acquired intangible assets		$	6,845		$	9,088

We performed a review of our acquired intangible assets in the fourth quarter of 2014, including a review for impairment based on certain triggering events and no significant impairments of intangible assets were detected.

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

(In thousands)	2014		2013		2012
Cost of sales	$	2,293	$	4,239	$	1,157
Selling, service and administration	212		305		315
Research, development and engineering	480		240		250
	$	2,985	$	4,784	$	1,722

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

Year	Amortization
2015	$	1,388
2016	925
2017	810
2018	801
2019	802
Future years	2,119
	$	6,845

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 29, 2014.