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

We have goodwill in each of our reportable segments: Fiber and Data Segment goodwill resulted from our acquisitions of IdeaOne Telecom in 2012, CP Telecom in 2009 and Enventis Telecom in 2005. Equipment Segment goodwill resulted from our acquisition of Enventis Telecom in 2005 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)
 
September 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)
  
September 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
  
$
5,888
  
$
8,499
  
$
5,368
 
Other intangibles
1 - 5 years
  
2,930
   
1,393
   
2,930
   
1,250
 
Total
  
$
11,389
  
$
7,281
  
$
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 $220,000 and $223,000 for the three months ended September 30, 2013 and 2012, respectively and $663,000 and $580,000 for the nine months ended September 30, 2013 and 2012, respectively.

The estimated future amortization expense of identifiable intangible assets is as follows:

(Dollars in thousands)
 
 
For fiscal years ending December 31:
 
Remainder of fiscal 2013
 
$
220
 
2014
  
749
 
2015
  
616
 
2016
  
565
 
2017
  
554
 
2018
  
554
 
Thereafter
  
850