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GOODWILL AND OTHER INTANGIBLE ASSETS
 12 Months Ended
Dec. 31, 2013
GOODWILL AND OTHER INTANGIBLE ASSETS  
GOODWILL AND OTHER INTANGIBLE ASSETS

NOTE D—GOODWILL AND OTHER INTANGIBLE ASSETS

The Company completes its annual goodwill and indefinite lived intangible impairment analysis in the fourth quarter of each year. The Company has the option to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the two-step quantitative goodwill impairment test. If the Company determines that a two-step goodwill impairment test is necessary or more efficient than a qualitative approach, it will measure the fair value of the Company's reporting units using a combination of income, market and cost approaches. No triggering events have transpired since the Company's fourth quarter assessment. Goodwill allocated to the Company's operating segments for the two years ended December 31, 2013 and 2012 is as follows:

(In thousands)
   Patient Care   Products &
Services		   Total  

Balance at December 31, 2012

   $ 538,492   $ 136,282   $ 674,774  

Additions due to acquisitions

     7,317     —     7,317  

Adjustments

     (544 )   —     (544 )
               
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Balance at December 31, 2013

   $ 545,265   $ 136,282   $ 681,547  
               
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   Patient Care   Products &
Services		   Total  

Balance at December 31, 2011

   $ 474,166   $ 135,318   $ 609,484  

Additions due to acquisitions

     63,849     964     64,813  

Contingent considerations(1)

     477     —     477  
               
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Balance at December 31, 2012

   $ 538,492   $ 136,282   $ 674,774  
               
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
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(1)
Contingent considerations relates to acquisitions completed prior to the adoption of ASC 805.

The activity related to intangible assets for the two years ended December 31, 2013 and 2012 is as follows:

 
   December 31, 2013   December 31, 2012  
(In thousands)
   Gross
Carrying
Amount		   Accumulated
Amortization		   Net
Carrying
Amount		   Gross
Carrying
Amount		   Accumulated
Amortization		   Net
Carrying
Amount		  

Customer Lists

   $ 46,932   $ (11,627 ) $ 35,305   $ 48,044   $ (7,846 ) $ 40,198  

Trade Name

     10,023     (264 )   9,759     9,070     —     9,070  

Patents and Other Intangibles

     28,441     (15,484 )   12,957     27,810     (12,797 )   15,013  
                           
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   $ 85,396   $ (27,375 ) $ 58,021   $ 84,924   $ (20,643 ) $ 64,281  
                           
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​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
                           

Customer lists are amortized over their estimated period of benefit, generally 10 to 14 years. The majority of the value associated with trade names is identified as an indefinite-lived intangible asset. Trade names not identified as an indefinite- lived intangible asset are amortized over their estimated period of benefit of approximately one to three years. Patents are amortized using the straight-line method over five years. Total intangible amortization expenses were $6.7 million and $5.5 million for the years ended December 31, 2013 and December 31, 2012, respectively, which were included in Depreciation and amortization on the Company's Consolidated Statements of Income and Comprehensive Income. The weighted average life of the additions to customer lists, patents and other intangibles is 7.8 years.

Estimated aggregate amortization expense for definite-lived intangible assets for each of the five years ending December 31 and thereafter is as follows:

(In thousands)
    
  

2014

   $ 6,752  

2015

     6,505  

2016

     5,813  

2017

     5,401  

2018

     4,932  

Thereafter

     19,549  
       
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   $ 48,952  
       
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