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Goodwill and Other Identifiable Intangible Assets, Net
12 Months Ended
Sep. 30, 2011
Goodwill and Other Identifiable Intangible Assets, Net [Abstract] 
GOODWILL AND OTHER IDENTIFIABLE INTANGIBLE ASSETS, NET
3. GOODWILL AND OTHER IDENTIFIABLE INTANGIBLE ASSETS, NET
Identifiable Intangible Assets, net
Amortized identifiable intangible assets, net as of September 30, 2011 and 2010 are comprised of the following (in thousands):
                                                 
    As of September 30, 2011     As of September 30, 2010  
    Gross                     Gross              
    carrying     Accumulated             carrying     Accumulated        
    amount     amortization     Net     amount     amortization     Net  
Purchased and core technology
  $ 46,412     $ (41,716 )   $ 4,696     $ 46,484     $ (38,917 )   $ 7,567  
License agreements
    2,840       (2,610 )     230       2,840       (2,537 )     303  
Patents and trademarks
    10,341       (7,505 )     2,836       9,753       (6,522 )     3,231  
Customer maintenance contracts
    700       (674 )     26       700       (604 )     96  
Customer relationships
    17,437       (10,865 )     6,572       17,481       (9,096 )     8,385  
Non-compete agreements
    1,036       (1,036 )           1,039       (770 )     269  
 
                                   
Total
  $ 78,766     $ (64,406 )   $ 14,360     $ 78,297     $ (58,446 )   $ 19,851  
 
                                   
Amortization expense for fiscal years 2011, 2010 and 2009 is as follows (in thousands):
         
Fiscal year   Total  
2011
  $ 6,171  
2010
  $ 7,484  
2009
  $ 7,476  
Estimated amortization expense for the next five years is as follows (in thousands):
         
Fiscal year   Total  
2012
  $ 4,594  
2013
  $ 3,527  
2014
  $ 2,887  
2015
  $ 1,911  
2016
  $ 658  
Goodwill
The changes in the carrying amount of goodwill for fiscal 2011 and 2010 are as follows (in thousands):
                 
    2011     2010  
Beginning balance, October 1
  $ 86,210     $ 86,558  
Currency translation adjustments
    (198 )     (348 )
 
           
Ending balance, September 30
  $ 86,012     $ 86,210