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Intangible Assets
 12 Months Ended
Dec. 31, 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, "Fair Value Measurements and Disclosures." Additionally, during fiscal 2015, we licensed additional third-party technology.

We monitor the carrying value of our intangible assets for potential impairment and test the recoverability of such assets annually during the fourth quarter and whenever events or changes in circumstances indicate that their carrying amounts may not be recoverable. The results of our assessments are summarized below and more fully detailed in Note 9.

During the third quarter of fiscal 2016, we recorded a $7.9 million non-cash impairment charge to the intangible assets associated with future HDMI adopter fees. During the fourth quarter of fiscal 2015, we recorded a $9.0 million impairment charge to the intangible assets of the then Qterics operating segment comprising developed technology of $3.9 million, and customer relationships of $5.1 million. With the sale of Qterics in April 2016, its balances for intangible assets, accumulated amortization, and impairment have been removed from the balance for intangible assets, net of amortization in the Consolidated Balance Sheet as of December 31, 2016. No impairment charges related to intangible assets were recorded during fiscal 2014 as no indicators of impairment were present.

The following tables summarize the details of our total purchased intangible assets as of December 31, 2016 and January 2, 2016:
 
 
December 31, 2016
(In thousands)
 
Weighted Average Amortization Period (in years)
 
Gross
 
Impairment
 
Accumulated Amortization
 
Intangible assets, net of amortization
Developed technology
 
4.7
 
$
141,359

 
$
—

 
$
(55,493
)
 
$
85,866

Customer relationships
 
6.1
 
30,800

 
(7,866
)
 
(13,694
)
 
9,240

Licensed technology
 
3.3
 
2,127

 
—

 
(1,201
)
 
926

Patents
 
5
 
769

 
—

 
(279
)
 
490

Total identified finite-lived intangible assets
 
 
 
175,055

 
(7,866
)
 
(70,667
)
 
96,522

In-process research and development
 
indefinite
 
22,341

 
—

 
—

 
22,341

Total identified intangible assets
 
 
 
$
197,396

 
$
(7,866
)
 
$
(70,667
)
 
$
118,863


 
 
January 2, 2016
(In thousands)
 
Weighted Average Amortization Period (in years)
 
Gross
 
Impairment
 
Accumulated Amortization
 
Intangible assets, net of amortization
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)
December 31, 2016
 
January 2, 2016
 
January 3, 2015
Research and development
$
745

 
$
731

 
$
—

Amortization of acquired intangible assets
33,575

 
28,849

 
2,948

 
$
34,320

 
$
29,580

 
$
2,948



The annual expected amortization expense of acquired intangible assets with finite lives is as follows:
(In thousands)
Amount
2017
$
33,759

2018
27,877

2019
25,093

2020
7,145

2021
2,547

Thereafter
101

Total
$
96,522