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INTANGIBLE ASSETS AND GOODWILL (Notes)
 12 Months Ended
Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]  
INTANGIBLE ASSETS AND GOODWILL
INTANGIBLE ASSETS AND GOODWILL

Intangible Assets

Amortizing identifiable intangible assets related to our acquisitions or capitalized costs of internally developed or externally purchased software that form the basis for our products consisted of the following at December 31, 2019 and 2018 (in thousands):
 
December 31,
 
2019
 
2018
 
 
Gross
 
Accumulated
Amortization
 
 
Net
 
 
Gross
 
Accumulated
Amortization
 
 
Net
Completed technologies and patents
$
58,270

 
$
(58,270
)
 
$
—

 
$
58,246

 
$
(54,508
)
 
$
3,738

Customer relationships
54,756

 
(54,756
)
 
—

 
54,986

 
(54,292
)
 
694

Trade names
1,346

 
(1,346
)
 
—

 
1,346

 
(1,346
)
 
—

Capitalized software costs
4,911

 
(4,911
)
 
—

 
4,911

 
(4,911
)
 
—

Total
$
119,283

 
$
(119,283
)
 
$
—

 
$
119,489

 
$
(115,057
)
 
$
4,432


Amortization expense related to intangible assets in the aggregate was $4.4 million, $9.3 million, and $9.3 million for the years ended December 31, 2019, 2018, and 2017, respectively. As of June 30, 2019, intangible assets were fully amortized.

Goodwill

The acquisition of Orad resulted in goodwill of $32.6 million in 2015. Through the evaluation of the discrete financial information that is regularly reviewed by the chief operating decision makers (our chief executive officer and chief financial officer), we have determined that we have one reportable segment. We have stockholders’ deficit of $155.1 million as of December 31, 2019. As the goodwill of our reporting unit has a negative carrying value, it will not be impaired.