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Foreclosed Real Estate and Repossessed Personal Property - Summary of Foreclosed Real Estate and Repossessed Personal Property (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Foreclosed Assets [Line Items]        
Foreclosed real estate $ 10,911 $ 27,663 $ 19,983 $ 27,826
Repossessed personal property 81 161    
Total foreclosed real estate and repossessed personal property $ 10,992 $ 27,824