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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
Mar. 31, 2013
Dec. 31, 2012
Mar. 31, 2012
Dec. 31, 2011
Foreclosed Assets [Line Items]        
Foreclosed real estate $ 11,057 $ 10,911 $ 26,701 $ 27,663
Repossessed personal property 31 81    
Total foreclosed real estate and repossessed personal property $ 11,088 $ 10,992