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Goodwill and Intangibles (Estimated Amortization Expense of Intangibles) (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]    
Remaining in 2012 $ 370  
2013 916  
2014 758  
2015 711  
2016 465  
Thereafter 2,197  
Net Intangible Assets $ 5,417 $ 6,139