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Other Intangible Assets (Tables)
12 Months Ended
Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]  
Other Intangible Assets
Other intangible assets (in thousands):
 
 
 
 
As of December 31,
 
 
 
2013
 
2012
 
 
 
Gross
Amount
 
Accumulated
Amortization
 
Net
 
Gross
Amount
 
Accumulated
Amortization
 
Net
Amortizing intangible assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
Customer relationships
 
$
35,156

 
$
31,262

 
$
3,894

 
$
30,831

 
$
28,211

 
$
2,620

 
Developed technology
 
29,097

 
25,039

 
4,058

 
24,532

 
23,885

 
647

 
Patents, trademarks and tradenames
 
4,021

 
3,627

 
394

 

 

 

 
Service contracts
 
5,679

 
5,532

 
147

 
5,467

 
5,459

 
8

 
 
 
73,953

 
65,460

 
8,493

 
60,830

 
57,555

 
3,275

Non-amortizing intangible assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
Trademarks and tradenames
 
4,500

 

 
4,500

 

 

 

 
Total
 
$
78,453

 
$
65,460

 
$
12,993

 
$
60,830

 
$
57,555

 
$
3,275

Schedule of Expected Amortization Expense
As of December 31, 2013, estimated future amortization of other intangible assets was (in thousands):
 
 
2014
$
3,131

2015
2,165

2016
1,489

2017
695

2018
193

Thereafter
820

Total
$
8,493

No impairments of other intangible assets were recognized in 2013, 2012 or 2011.