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Intangible Assets
 9 Months Ended
Sep. 30, 2017
Intangible Assets [Abstract]  
Intangible Assets

(5)  Intangible Assets



Intangible assets, net, other than goodwill, as of September 30, 2017 and December 31, 2016 were as follows:



 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 



2017

 

2016

 

 

 

 

(in thousands)

Gross

 

Accumulated Amortization

 

Net

 

Gross

 

Accumulated Amortization

 

Net

 

Useful Life (in years)

 

Weighted Average Useful Life Remaining (in years)

Intangible assets with finite lives:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Customer relationships

$

 106,674 

 

$

 (56,538)

 

$

 50,136 

 

$

 99,067 

 

$

 (46,252)

 

$

 52,815 

 

1-14

 

6

Acquired technology

 

 55,148 

 

 

 (37,324)

 

 

 17,824 

 

 

 52,881 

 

 

 (27,543)

 

 

 25,338 

 

1-16

 

4

Trade names

 

 27,764 

 

 

 (16,322)

 

 

 11,442 

 

 

 28,110 

 

 

 (16,015)

 

 

 12,095 

 

1-8

 

5

Patent costs

 

 17,135 

 

 

 (6,794)

 

 

 10,341 

 

 

 16,263 

 

 

 (5,873)

 

 

 10,390 

 

1-20

 

9

Trade secrets

 

 19,443 

 

 

 (11,016)

 

 

 8,427 

 

 

 19,134 

 

 

 (9,383)

 

 

 9,751 

 

7

 

4

Acquired patents

 

 16,655 

 

 

 (11,556)

 

 

 5,099 

 

 

 16,965 

 

 

 (10,674)

 

 

 6,291 

 

1-6

 

4

Other

 

 25,683 

 

 

 (22,320)

 

 

 3,363 

 

 

 23,431 

 

 

 (18,610)

 

 

 4,821 

 

2-4

 

2

Total intangible assets

$

 268,502 

 

$

 (161,870)

 

$

 106,632 

 

$

 255,851 

 

$

 (134,350)

 

$

 121,501 

 

1-20

 

4



Amortization expense related to intangible assets was $8,845 and $26,661 for the quarter and nine months ended September 30, 2017, respectively, compared to $8,857 and $26,536 for the quarter and nine months ended September 30, 2016, respectively.