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Acquired Intangible Assets
 9 Months Ended
Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Acquired Intangible Assets
Acquired Intangible Assets:

The following table presents details of the Company's intangible assets subject to amortization as of the dates presented:
 
 
 
As of December 31, 2016
 
As of September 30, 2017
 
Useful
Live
(years)
 
Gross
 
Accumulated Amortization
 
Net
 
Gross
 
Accumulated Amortization
 
Net
Trade Names
10
 
$
1,040

 
$
(234
)
 
$
806

 
$
1,040

 
$
(312
)
 
$
728

Developed technology
10
 
2,980

 
(670
)
 
2,310

 
2,980

 
(894
)
 
2,086

Customer relationships
10
 
860

 
(194
)
 
666

 
860

 
(258
)
 
602

 
 
 
$
4,880

 
$
(1,098
)
 
$
3,782

 
$
4,880

 
$
(1,464
)
 
$
3,416



Acquired intangible assets are amortized using the straight-line method over their estimated useful life, which approximates the expected use of these assets. Amortization expense amounted to $122 for the three months ended September 30, 2016 and 2017, and $366 for the nine months ended September 30, 2016 and 2017. Amortization expense of $2,440 will be recognized over the next five years, or $488 per year.