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Commitments (Tables)
9 Months Ended
Dec. 31, 2011
Commitments [Abstract]  
Future Minimum Lease Payments Under Non-Cancelable Operating Leases
      September 30,  
Fiscal years   (In thousands)  

2012 (remaining three months)

  $ 1,875  

2013

    6,551  

2014

    4,835  

2015

    2,848  

2016

    1,556  

Thereafter

    4,809  
   

 

 

 
    $ 22,474