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Goodwill and Intangible Assets (Tables)
6 Months Ended
Jun. 30, 2012
Goodwill and Intangible Assets [Abstract]  
Changes in the carrying amount of goodwill
The changes in the carrying value of Goodwill for the six months ended June 30, 2012 were as follows:
 
      
Accumulated
    
      
Impairment
    
   
Goodwill
  
Losses
  
Total
 
Balance as of December 31, 2011
 $66,523  $(46,220) $20,303 
Foreign currency fluctuations
  (223)  (250)  (473)
Balance as of June 30, 2012
 $66,300  $(46,470) $19,830 
 
Acquired intangible assets excluding Goodwill
The balances of acquired Intangible Assets, excluding Goodwill, as of June 30, 2012 and December 31, 2011 were as follows:
 
   
Customer Lists
and
Service Contracts
  
Trade
Name
  
Technology
  
Total
 
Balance as of June 30, 2012:
            
Original cost
 $23,562  $4,492  $7,059  $35,113 
Accumulated amortization
  (9,064)  (1,347)  (2,504)  (12,915)
Carrying value
 $14,498  $3,145  $4,555  $22,198 
Weighted-average original life (in years)
  15   14   13     
                  
Balance as of December 31, 2011:
                
Original cost
 $25,987  $4,583  $7,136  $37,706 
Accumulated amortization
  (10,387)  (1,209)  (2,352)  (13,948)
Carrying value
 $15,600  $3,374  $4,784  $23,758 
Weighted-average original life (in years)
  14   14   13     
 
Estimated aggregate amortization expense of Intangible Assets
Estimated aggregate amortization expense based on the current carrying value of amortizable Intangible Assets for each of the five succeeding years and thereafter is as follows:

Remaining 2012
 $1,135 
2013
  2,285 
2014
  2,225 
2015
  2,214 
2016
  2,174 
Thereafter
  12,165 
Total
 $22,198