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Goodwill and Other Intangible Assets
12 Months Ended
Dec. 31, 2013
GOODWILL AND OTHER INTANGIBLE ASSETS [Abstract]  
Goodwill and Intangible Assets Disclosure
GOODWILL AND OTHER INTANGIBLE ASSETS
The following table shows the changes in the carrying amount of goodwill for the years ended December 31:
 
2013
 
2012
Balance at beginning of year
$
452,351

 
$
447,743

Goodwill acquired
1,049

 
648

Foreign currency translation
2,442

 
3,960

Balance at year end
$
455,842

 
$
452,351


Goodwill and indefinite-lived assets are reviewed for impairment on an annual basis in the fourth quarter. The Company completed its impairment review and determined that, through December 31, 2013, there had been no impairment of these assets.
The components of other intangible assets as of December 31 are as follows:
 
2013
 
2012
 
Gross
Amount
 
Accumulated
Amortization
 
Gross
Amount
 
Accumulated
Amortization
Customer relationships
$
98,374

 
$
(25,313
)
 
$
96,575

 
$
(21,928
)
Proven technology and patents
43,233

 
(29,763
)
 
42,960

 
(28,014
)
Tradename (finite life)
4,300

 
(1,619
)
 
3,972

 
(1,345
)
Tradename (indefinite life)
25,108

 

 
25,061

 

Other
757

 
(659
)
 
745

 
(462
)
 
$
171,772

 
$
(57,354
)
 
$
169,313

 
$
(51,749
)

The Company recognized amortization expense associated with the above intangible assets of $5.9 million, $7.2 million and $6.8 million for the years ended December 31, 2013, 2012 and 2011, respectively. The annual aggregate amortization expense based on the current balance of other intangible assets is estimated at $6.0 million for 2014, $5.4 million for 2015, $5.2 million for 2016, $5.0 million for 2017 and $4.7 million for 2018. The finite-lived intangible assets are amortized on a straight-line basis over periods ranging from 3 to 45 years. The straight-line method of amortization reflects an appropriate allocation of the cost of the intangible assets to earnings in proportion to the amount of economic benefits obtained by the Company in each reporting period. Purchased intangibles amortization was $5.3 million, $3.6 million after tax, $6.8 million, $4.5 million after tax and $6.2 million, $4.1 million after tax, for the years ended December 31, 2013, 2012 and 2011, respectively.
In addition to the above amortization, the Company recorded amortization expense associated with capitalized software of $18.6 million, $13.9 million and $10.8 million for the years ended December 31, 2013, 2012 and 2011, respectively.