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Goodwill and Intangible Assets (Tables)
9 Months Ended
Sep. 30, 2012
Goodwill and Intangible Assets [Abstract]  
Estimated annual amortization expense
         
    Amortization  
    Expense  
    (In Thousands)  

2012

  $ 1,055  

2013

  $ 531  

2014

  $ 378  

2015

  $ 115  

2016

  $ —