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Goodwill and Intangible Asset
6 Months Ended
Jun. 30, 2016
Goodwill and Intangible Assets [Abstract]  
Goodwill and Intangible Asset
Note 3.          Goodwill and Other Intangible Assets

The goodwill balance was $14.9 million as of June 30, 2016 and December 31, 2015. Goodwill is subject to annual impairment tests and if triggering events are present before the annual tests, we will assess impairment. As of June 30, 2016, no impairment charges were taken.

Other intangible assets consist primarily of customer relationship enhancements. Other intangible assets are amortized on a straight-line basis over their estimated useful lives of 5 years. The amortization is based on a forecast of approximately equal annual customer orders over the 5-year period. Amortization expense was $0.6 million and $1.1 million for each of the three and six months ended June 30, 2016 and 2015, respectively. The other intangible assets were fully amortized as of June 30, 2016. Other intangible assets are subject to impairment review if there are events or changes in circumstances that indicate that the carrying amount is not recoverable. As of June 30, 2016, no impairment charges were taken.

 
Other intangible assets consist of the following (in thousands):

  
June 30, 2016
  
December 31, 2015
 
  
Cost
  
Accumulated
Amortization
  
Cost
  
Accumulated
Amortization
 
Other intangible assets
 
$
11,286
  
$
11,286
  
$
11,286
  
$
10,157
 
  
$
11,286
  
$
11,286
  
$
11,286
  
$
10,157