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Goodwill and Other Intangible Assets
12 Months Ended
Dec. 31, 2011
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:
 
2011
 
2010
Balance at beginning of year
$
434,699

 
$
440,950

Goodwill acquired
15,425

 
7,778

Goodwill disposed

 
(12,952
)
Foreign currency translation
(2,381
)
 
(1,077
)
Balance at year end
$
447,743

 
$
434,699


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, 2011, there had been no impairment of these assets.
The components of other intangible assets as of December 31 are as follows:
 
2011
 
2010
 
Gross
Amount
 
Accumulated
Amortization
 
Gross
Amount
 
Accumulated
Amortization
Customer relationships
$
95,203

 
$
(18,735
)
 
$
80,674

 
$
(15,968
)
Proven technology and patents
41,643

 
(25,174
)
 
36,262

 
(22,298
)
Tradename (finite life)
3,995

 
(1,072
)
 
2,420

 
(760
)
Tradename (indefinite life)
25,033

 

 
23,634

 

Other
743

 
(226
)
 
510

 
(102
)
 
$
166,617

 
$
(45,207
)
 
$
143,500

 
$
(39,128
)

The Company recognized amortization expense associated with the above intangible assets of $6.8 million, $6.2 million and $4.8 million for the years ended December 31, 2011, 2010 and 2009, respectively. The annual aggregate amortization expense based on the current balance of other intangible assets is estimated at $7.3 million for 2012, $5.9 million for 2013, $5.7 million for 2014, $5.1 million for 2015 and $4.9 million for 2016. The finite-lived intangible assets are amortized on a straight-line basis over periods ranging from 5 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 $4.1 million, $3.7 million and $2.7 million, for the years ended December 31, 2011, 2010 and 2009, respectively.
In addition to the above amortization, the Company recorded amortization expense associated with capitalized software of $10.8 million, $8.6 million and $7.0 million for the years ended December 31, 2011, 2010 and 2009, respectively.