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Intangibles (Tables)
 3 Months Ended
Mar. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]  
Amortization of Intangible Assets Acquired

Amortization of intangible assets acquired is calculated using the straight-line method over the estimated useful lives of the assets.

 

 

 

Estimated Life

 

March 31,

 

 

December 31,

 

 

 

(years)

 

2018

 

 

2017

 

Capitalized patent costs

 

17-20

 

$

8,200

 

 

$

7,978

 

Intangible assets acquired:

 

 

 

 

 

 

 

 

 

 

Purchased patents and intellectual property

 

3-10

 

 

250

 

 

 

250

 

Existing technology

 

5

 

 

1,560

 

 

 

1,560

 

Customer relationships

 

7

 

 

290

 

 

 

290

 

Backlog

 

2

 

 

760

 

 

 

760

 

Tradenames

 

3

 

 

290

 

 

 

290

 

Non-solicitation agreements

 

1

 

 

120

 

 

 

120

 

Gross intangible assets

 

 

 

 

11,470

 

 

 

11,248

 

Accumulated amortization

 

 

 

 

(4,992

)

 

 

(4,867

)

Intangibles, net

 

 

 

$

6,478

 

 

$

6,381