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INTANGIBLE ASSETS (Notes)
 9 Months Ended
Sep. 30, 2013
Goodwill and Intangible Assets Disclosure [Abstract]  
INTANGIBLE ASSETS
INTANGIBLE ASSETS

Amortizing identifiable intangible assets related to the Company’s acquisitions or capitalized costs of internally developed or externally purchased software that form the basis for the Company’s products consisted of the following at September 30, 2013 and December 31, 2012 (in thousands):
 
September 30, 2013
 
December 31, 2012
 
 Gross
 
Accumulated Amortization
 
 Net
 
 Gross
 
Accumulated Amortization
 
Net
Completed technologies and patents
$
52,724

 
$
(52,510
)
 
$
214

 
$
52,720

 
$
(51,171
)
 
$
1,549

Customer relationships
49,592

 
(44,856
)
 
4,736

 
49,543

 
(42,828
)
 
6,715

Trade names
5,974

 
(5,974
)
 
—

 
5,970

 
(5,970
)
 
—

Capitalized software costs
5,941

 
(5,217
)
 
724

 
5,938

 
(4,985
)
 
953

Total
$
114,231

 
$
(108,557
)
 
$
5,674

 
$
114,171

 
$
(104,954
)
 
$
9,217

Amortization expense related to intangible assets in the aggregate was $0.9 million and $1.5 million, respectively, for the three months ended September 30, 2013 and 2012 (Restated), and $3.5 million and $6.1 million, respectively, for the nine months ended September 30, 2013 and 2012 (Restated). The Company expects amortization of intangible assets to be $0.8 million for the remainder of 2013, $1.9 million in 2014, $1.8 million in 2015 and $1.2 million in 2016.