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Intangible Assets
 12 Months Ended
Jan. 02, 2016
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets
Intangible Assets

In connection with our acquisitions of Silicon Image in March 2015 and SiliconBlue in December 2011 we recorded identifiable intangible assets related to developed technology, customer relationships, licensed technology, patents, and in-process research and development based on guidance for determining fair value under the provisions of ASC 820. Additionally, during fiscal 2015, we licensed additional third-party technology.

During the fourth quarter of 2015, we recorded a $9.0 million impairment charge to the intangible assets of the Qterics operating segment comprising developed technology of $3.9 million, and customer relationships of $5.1 million (Note 9).

The following table summarizes the details of our total purchased intangible assets:

 
 
Weighted Average Amortization Period (in years)
 
Gross
 
Impairment
 
Accumulated Amortization
 
Intangible assets, net of amortization
(In thousands)
 
 
 
 
 
 
 
 
 
January 2, 2016
Developed technology
 
4.7
 
$
135,700

 
$
(3,856
)
 
$
(28,384
)
 
$
103,460

Customer relationships
 
5.5
 
37,258

 
(5,139
)
 
(10,156
)
 
21,963

Licensed technology
 
2.5
 
2,127

 
—

 
(610
)
 
1,517

Patents
 
5
 
769

 
—

 
(126
)
 
643

Total identified finite-lived intangible assets
 
 
 
175,854

 
(8,995
)
 
(39,276
)
 
127,583

In-process research and development
 
indefinite
 
35,000

 
—

 
—

 
35,000

Total identified intangible assets
 
 
 
$
210,854

 
$
(8,995
)
 
$
(39,276
)
 
$
162,583




We recorded amortization expense associated with these intangible assets on the Consolidated Statements of Operations as follows:
 
Year Ended
(In thousands)
January 2, 2016
 
January 3, 2015
 
December 28, 2013
Research and development
$
731

 
$
—

 
$
—

Amortization of acquired intangible assets
28,849

 
2,948

 
2,960

 
$
29,580

 
$
2,948

 
$
2,960




The annual expected amortization expense of acquired intangible assets with finite lives is as follows:
(In thousands)
Amount
2016
$
34,892

2017
33,275

2018
26,793

2019
24,009

2020
6,248

Thereafter
2,366

Total
$
127,583