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Goodwill and Other Intangible Assets
12 Months Ended
Dec. 31, 2012
Goodwill and Other Intangible Assets [Abstract]  
Goodwill and Other Intangible Assets
Note 2. 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 the Telecom Segment goodwill resulted from our acquisition of Heartland Telecommunications in 1997. The tax deductible portion of goodwill is $26,964,000. Our acquisition of IdeaOne Telecom resulted in goodwill of $1,725,000 which is deductible for tax purposes.

(Dollars in thousands)
 
December 31, 2012
  
December 31, 2011
 
Fiber and Data
 $5,384  $3,659 
Equipment
 $596  $596 
Telecom
 $23,048  $23,048 

We changed our date for conducting our analysis to October 1 of each year rather than December 31. This change is practicable and preferable as it (1) provides sufficient time to thoroughly perform the quantitative tests if asset impairment is indicated, (2) provides maximum implementation time for any financial reporting requirements associated with impairment tests for indefinite-lived assets and (3) shifts work performed during the year-end process and facilitates timely interactions with third parties.

Intangible assets with finite lives are amortized over their respective estimated useful lives to their estimated residual values. Identifiable intangible assets that are subject to amortization are evaluated for impairment. The components of intangible assets are as follows:

(Dollars in thousands)
   
As of December 31, 2012
  
As of December 31, 2011
 
     
Gross Carrying
  
Accumulated
 
Gross Carrying
  
Accumulated
 
 
Useful Lives
 
Amount
  
Amortization
 
Amount
  
Amortization
 
Definite-lived intangible assets
              
Customer relationships
1 - 8 years
 $8,499  $5,368  $5,299  $4,746 
Other intangibles
1 - 5 years
  2,930   1,250   2,830   1,069 
Total
   $11,429  $6,618  $8,129  $5,815 

Amortization expense related to the definite-lived intangible assets was $803,000, $354,000, and $357,000 for the years ended December 31, 2012, 2011 and 2010, respectively. Total estimated amortization expense for the five years subsequent to 2012 is as follows: 2013 - $893,000; 2014 - $762,000; 2015 - $629,000; 2016 - $567,000; 2017 - $554,000.