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Goodwill and Other Intangible Assets
6 Months Ended
Jun. 30, 2013
Goodwill and Other Intangible Assets [Abstract]  
Goodwill and Other Intangible Assets
Note 5. Goodwill and Other Intangible Assets

We have goodwill in all three of our operating units: Fiber and Data Segment goodwill resulted from our acquisition of IdeaOne Telecom in 2012, CP Telecom in 2009 and Enventis Telecom in 2005. Equipment Segment goodwill resulted from our acquisition of Enventis Telecom and Telecom Segment goodwill resulted from our acquisition of Heartland Telecommunications in 1997. The tax deductible portion of goodwill is $26,964,000.

(Dollars in thousands)
 
June 30, 2013
  
December 31, 2012
 
Fiber and Data
 
$
5,384
  
$
5,384
 
Equipment
 
$
596
  
$
596
 
Telecom
 
$
23,048
  
$
23,048
 

The components of intangible assets are as follows:

(Dollars in thousands)
   
June 30, 2013
  
December 31, 2012
 
    
Gross Carrying
  
Accumulated
  
Gross Carrying
  
Accumulated
 
 
Useful Lives
 
Amount
  
Amortization
  
Amount
  
Amortization
 
Definite-lived intangible assets
        
Customer relationships
1 - 8 years
 
$
8,459
  
$
5,716
  
$
8,499
  
$
5,368
 
Other intangibles
1 - 5 years
  
2,930
   
1,345
   
2,930
   
1,250
 
Total
   
$
11,389
  
$
7,061
  
$
11,429
  
$
6,618
 

In the first quarter of 2013, we reduced the carrying value of the customer relationships by $40,000. This impairment loss was directly related to our decision to no longer provide wireless Internet service in the Fargo, North Dakota market. See Note 4 "Long-Lived Assets."

Amortization expense related to the definite-lived intangible assets was $443,000 and $357,000 for the six months ended June 30, 2013 and 2012, respectively. Total estimated amortization expense for the remaining six months of 2013 and the five years subsequent to 2013 is as follows: 2013 (July 1 – December 31) – $440,000; 2014 - $749,000; 2015 - $616,000; 2016 - $565,000; 2017 - $554,000; 2018 - $554,000.