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Intangible Assets
 6 Months Ended
Jun. 30, 2016
Intangible Assets  
Intangible Assets

7. Intangible Assets

Intangible assets consist of the following:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

June 30, 2016

 

December 31, 2015

 

 

    

Gross

    

 

 

    

Net

    

Gross

    

 

 

    

Net

 

 

 

Carrying

 

Accumulated

 

Carrying

 

Carrying

 

Accumulated

 

Carrying

 

 

 

Amount

 

Amortization

 

Amount

 

Amount

 

Amortization

 

Amount

 

Trade name (indefinite life)

 

$
200,000

 

$

 —

 

$
200,000

 

$
200,000

 

$

 —

 

$
200,000

 

Trade names (finite life)

 

 
2,410

 

 
(1,656)

 

 
754

 

 
2,410

 

 
(1,509)

 

 
901

 

Customer relationships

 

 
237,620

 

 
(101,343)

 

 
136,277

 

 
237,620

 

 
(94,851)

 

 
142,769

 

Proprietary technology

 

 
32,240

 

 
(16,450)

 

 
15,790

 

 
32,240

 

 
(14,849)

 

 
17,391

 

Other

 

 
3,180

 

 
(1,928)

 

 
1,252

 

 
3,180

 

 
(1,776)

 

 
1,404

 

 

 

$
475,450

 

$
(121,377)

 

$
354,073

 

$
475,450

 

$
(112,985)

 

$
362,465

 

 

Intangible asset amortization expense was $4.2 million and $4.1 million for the three months ended June 30, 2016 and 2015, respectively. Intangible asset amortization expense was $8.4 million and $8.3 million for the six months ended June 30, 2016 and 2015, respectively.