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Intangible Assets
 3 Months Ended
Mar. 31, 2017
Intangible Assets [Abstract]  
Intangible Assets



(5)  Intangible Assets



Intangible assets, net, other than goodwill, as of March 31, 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:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Patent costs

$

 16,969 

 

$

 (6,337)

 

$

 10,632 

 

$

 16,263 

 

$

 (5,873)

 

$

 10,390 

 

1-20

 

9

Acquired technology

 

 54,192 

 

 

 (31,125)

 

 

 23,067 

 

 

 52,881 

 

 

 (27,543)

 

 

 25,338 

 

1-16

 

4

Acquired patents

 

 16,982 

 

 

 (11,093)

 

 

 5,889 

 

 

 17,047 

 

 

 (9,454)

 

 

 7,593 

 

1-6

 

4

Customer relationships

 

 103,106 

 

 

 (49,576)

 

 

 53,530 

 

 

 99,067 

 

 

 (46,252)

 

 

 52,815 

 

1-14

 

6

Trade secrets

 

 19,254 

 

 

 (9,926)

 

 

 9,328 

 

 

 19,530 

 

 

 (7,919)

 

 

 11,611 

 

7

 

4

Trade names

 

 32,926 

 

 

 (16,936)

 

 

 15,990 

 

 

 28,110 

 

 

 (16,015)

 

 

 12,095 

 

1-8

 

5

Other

 

 23,971 

 

 

 (19,813)

 

 

 4,158 

 

 

 22,953 

 

 

 (21,294)

 

 

 1,659 

 

2-4

 

2

Total intangible assets

$

 267,400 

 

$

 (144,806)

 

$

 122,594 

 

$

 255,851 

 

$

 (134,350)

 

$

 121,501 

 

1-20

 

4



Amortization expense related to intangible assets was $8,832 and $8,819 for the quarters ended March 31, 2017 and 2016, respectively.